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Nightmare Fuel / Doctor Who New Series

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Nightmare Fuel in the new series.

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    Series 1
  • "Rose":
    • The Autons/killer dummies.
    • The huge, throbbing amorphous Nestene Consciousness in the sewers controlling the Autons.
  • "The Unquiet Dead": The gaseous aliens who possess dead bodies like zombies, and the fact that the Doctor later claims that the servant girl in the mortuary had already been dead when she told everyone to run and then blew up the house and sacrificed herself to kill the evil aliens.
  • "Aliens of London"/"World War Three":
  • "Dalek":
    • The man who has his cranium sucked by the Dalek's arm (or the fact that the entire Earth military could be defeated by one Dalek).
    • From the same episode; what initially seemed like a success for Rose and a few humans being chased by the Dalek think they can escape the alien cyborg horror, by merely going up a flight of stairs as the Dalek has no legs to do the same. Then... EL-E-VATE.
      • Extra points because dozens of people who watched the classic series comment the only reason they got over their fear of Daleks was that they couldn't climb stairs. Oh, Crap!.
      • When the Doctor is first put in that room with the chained-up Dalek. The horrified look on his face when he (and the audience) figures out what it is...
      • The Doctor taunting the powerless Dalek.
        "You're right, maybe we are... Yeah, right, yeah, okay. You've got a point 'cause I know what to do. I know what should happen. I know what you deserve. Exterminate!"
      • This exchange between the Doctor and Van Statten, chilling in its bluntness:
        The Doctor: What's the nearest town?
        Van Statten: Salt Lake City.
        The Doctor: Population?
        Van Statten: One million.
        The Doctor: All dead.
    • The entire episode, when it's not breaking your heart. There's a reason why this episode was said to be the one that made the Daleks scary again, because it leaves a lasting impression of what just one Dalek could do alone, and makes future episodes like "Bad Wolf"/"The Parting of the Ways" and "Doomsday" much more horrifying when taking into account what one Dalek can do by themselves.
  • "The Long Game":
  • "Father's Day":
    • All the timewarping caused by Rose when she tries to save her father from death in the past.
    • Not to mention the monsters that appear. Giant demonic flying creatures with scythe-like tails, who kill by embracing around the victim and disintegrating them. They also have a bit of a Blue-and-Orange Morality since the only way they know to solve a time paradox is by killing the planet's entire population.
  • "The Empty Child"/"The Doctor Dances":
    • The gas mask people. Especially when people are turned into them. The sight of the gas mask forcing its way out of someone's face is uniquely disturbing.
    • "End of the tape. It ran out about 30 seconds ago."
    • "I sent it to its room. This is its room."
    • Then there's the Fridge Horror part once your mind finishes digesting the story. Imagine having your face infused into a gas mask (possibly painfully), having part of your memory damaged to the point where you can't recall how your mother looks like but you're so frightened that it's all you want thanks to basic human instinct which you still have, and worst of all, your mother not wanting to admit you being her child anymore because you're this ugly monstrosity that's only human neck-down now. Body Horror and Parental Abandonment horror at it's worst.
  • "Boom Town": The particularly gruesome description of how the Raxacoricofallapatorians punish planetary genocide on their homeworld (although it's quite a deserved punishment).
  • "Bad Wolf"/"The Parting of the Ways":
    • The game shows/reality shows of the far future with a twist (it's fatal to everyone except the winner, or even him if there are no other contestants). What's even worse is that it's not disintegration, but being turned into Dalek material...
      • Jack is sent into a fashion show where two robots pick out new clothes and styles for the contestant... during the first segment. During the second segment, the robots equip themselves with buzzsaws and surgical implements to mutilate the contestant with horrific surgeries.
      "We could stitch your legs to the middle of your chest... nothing is too extreme!"
    • The wireframed girl who's grown to be the motherboard of the satellite's computer that broadcasts these shows (not to mention Earth having all its surface destroyed). Constantly buzzing with thoughts, constantly watched by the Daleks, who can kill her at a moment's notice if she slips up... only a few precious seconds of freedom.
    • Even worse, the Extermination of Floor Zero. There was no reason for the Daleks to do it-the people weren't fighting against the Daleks, they were virtually defenseless, and there wasn't even anything down there for them to use. The only reason? They found thirty or so life forms that weren't Dalek.
    • The Emperor Dalek. With his deep, booming, warped voice and unsettling close-ups of his mutant face.
      "We waited, here, in the dark space..."
    • Particular mention goes to the scene where he reveals that he's not behind the recurring Bad Wolf motif:
      Dalek Emperor: They are not my design."
      • The Doctor makes an Oh, Crap! face, the music builds eerily, and the camera shows the gigantic "BAD WOLF" logo.
        Dalek Emperor: This is the truth of God."
      • The whole scene is a very effective use of chilling atmosphere and Nothing Is Scarier.

    Series 2
We are all afraid of the big, bad wolf.
  • "The Christmas Invasion":
    • The newly regenerated Tenth Doctor, utterly destroying Harriet Jones' life and career with just six words, without any regret. It gets worse with later seasons, when it allows the Master to take over Britain, not to mention what happens in Torchwood. And Harriet herself is clearly unnerved, and asks him to stop, and he still does it. No second chances indeed.
      • As mentioned above, this action is what put the Master into power, as it was said in "The Sound of Drums" that "Harold Saxon" came to prominence "just after the downfall of Harriet Jones". As if the countless atrocities committed during the "year that never was" weren't bad enough, it's negation and the subsequent death of the Master allowed the government seen in Torchwood: Children of Earth to come to power and almost send millions of children to be used as alien narcotics.
      • The true Nightmare Fuel and Tear Jerker of the entire debacle occurs in "Journey's End", when the Davros tells the Doctor of "The Earth woman who fell opening the Subwave Network." The Doctor questions who it is, and when Rose tells him Harriet Jones, the look of sheer guilt and horror is crushing.
    • While the Sycorax leader may have had it coming, the Doctor disposing of him was still rather unnerving, especially after the Doctor has been cheerfully talking about finding a satsuma in his bathrobe.
      Tenth Doctor: No second chances. I'm that sort of a man.
  • "New Earth":
  • "Tooth and Claw": The probably first truthfully frightful werewolf depicted in a TV series.
  • "School Reunion":
    • The aliens who take over a school to use the children's minds as a supercomputer, and eat the rejects. The opening of this episode may just be the creepiest three minutes of Doctor Who ever.
      Finch: No parents? No one to miss you? I see why the nurse sent you. You poor child. Poor... thin child. Come inside. It's nearly time for lunch.
    • The fact that line was uttered by Giles and Nathan Wallace makes it especially creepy.
  • "The Girl in the Fireplace":
    • The eighteenth-century French girl who grows up and dies with the prospect of meeting the Doctor only a few times while only a handful of minutes pass for the Doctor himself (or the "clockwork robots" stalking her, especially when disguised, and the way they repair their space ship structural/electronic/critical damage with human organs).
    • The real chilling bit about said clockwork robots is how entirely believable the scenario is. Not from the sci-fi perspective, but consider it this way: they were repair drones, and the ship was in need of repair. It's their one purpose, their only reason to exist. And, as one said, "We did not have the parts." And he just repeats that, over and over, until the Doctor gets it, "...No one told them the crew was off limits." With an AI that single-minded, it seems horrifyingly probable for the prime directive to supersede things like "human life". This could even be a Zeroth Law Rebellion: The ship is badly damaged, and too far from any sort of rescue for external help to reach it in time. In such a scenario, the AI wouldn't even be clearly wrong to use the crew as replacement parts, since they will die if the ship isn't repaired. Their very practical approach to organ harvesting doesn't help.
      "I will not set foot there again."
      "We do not require your feet."
    • This scene takes a few seconds to sink in, but when it does, you'll shit bricks:
      The Doctor: [looks at a broken clock] Okay, that's scary.
      Reinette: You're scared of a broken clock?
      The Doctor: Just a bit scared, yeah. Just a tiny bit. 'Cause you see, if this clock's broken, and it's the only one in the room, then what's that ticking?
    • The scene where the Doctor looks under Reinette's bed is already a pretty touchy subject for anyone who's had night terrors, but when the camera slowly pans up to show that all-out shit-inducing nightmare mask, hidden in the shadows just so, you find yourself cowering under the covers.
    • The sheer horrifying creepiness of the clockwork 'bots themselves. Eyeless 18th-century pseudo-Mardi Gras mask? Check. Monotonous voice? Check. Slow and jerky but inexorable movements accompanied by sounds to alert their arrival and your sure demise? Check. Retractable saws and other scary implements? Check. Total single-mindedness focusing on harvesting your organs? Check.
    • And then there's the Lockdown minisode "Pompadour". Remember how the robots were scanning her brain? Well, it worked. Why can't I see you, Doctor? Why is it so quiet? Why can't I feel my breath? Where am I?
  • "Rise of the Cybermen"/"The Age of Steel":
    • The Alternate Universe Cybermen's origins with the "upgrade or be deleted" scene. So much screaming and death and terror and the Doctor knows that this could spread across the galaxy.
    • The fact that the Doctor is terrified, actually terrified of the Cybermen, to the extent that he surrenders without a fight. At first, anyway. And the way he shows how terrified he is isn't matched again for the rest of the Tenth Doctor's run. He's that terrified of them.
    • The scene where the Doctor has to kill a Cyberman who he discovers was a bride at her wedding,
    • The way the Doctor defeats the Cybermen. Allowing them to feel once again, to realize what they have truly become! You know out there one of them is AU Jackie Tyler!
    • You're walking around, minding your own business, and suddenly your mind shuts down and you mindlessly walk into an incinerator. The one shot of that was... horrific.
    • The screams and agonised howls as we get a shot of the Cyber Conversion machinery from the victim's POV. It's all whirring saw blades and vicious knives cutting away everything human. Now think about that: The machines are stripping the flesh and bone of the victim, removing the brain and putting it inside a metal suit, and the victim is conscious and feels every second of it. No wonder they go insane when their emotions are restored. Somehow the creepiest part of the scene is still Mr. Crane bobbing away to the "The Lion Sleeps Tonight" as he calmly oversees the conversion process.
    • Staying with the conversion factory, those pre-recorded messages playing throughout. "Chamber 6 now open for human upgrading. All reject stock will be incinerated." Brrr... And it raises the question of who the hell recorded those?
    • Before the Cybermen, there's the scene where everyone in that one street stops completely still as Cybus Industries downloads the daily news package. Absolutely everyone. They even laugh at the same time. It's just unsettlingly creepy.
  • "The Idiot's Lantern":
    • The faceless zombies and the killer TV saying "Goodnight children everywhere" while absorbing a panicking Rose's soul... in an episode written by Mark Gatiss.
    • The Government hoarding them away. The Doctor says it's like Soviet Russia.
    • Killer-TV-Lady sucking her fingers, screaming/begging "Feed me!" is terrifying.
      "I'm the Wire. And I will gobble you up, pretty boy."
  • "The Impossible Planet"/"The Satan Pit":
    • The Ood of the far future (and the scene where a black hole eats a system with a "billion years old civilization" in it), along with Satan himself (whatever it was) together with the man he possessed.
    • The entire situation the crew of Sanctuary Base 6 are in. Trapped in a claustrophobic series of corridors on a dead world that shouldn't exist, solar systems being ripped apart above their heads, earthquakes that have caused parts of their base to collapse, and the black hole staring down at them like an unblinking eye. And then there's what's beneath them...
    • After Scooti is blown out into space and they find her floating overhead the space station and towards the black hole, it looks like her corpse is waving to the others to come join her, or waving goodbye.
    • The possessed Toby is what's really scary, which is very understandable. The body was trapped at the center of a planet which is circling a black hole. Its body can't even touch someone standing right in front of it. Its mind is not trapped. Its mind can take over the Ood and the station's speakers and people. Its mind is scarier than its body.
    • The "don't turn around" scene. Imagine thinking that something horrible is right behind you, it's getting closer, it's almost touching you and yet you can't turn around or else you'll die.
    • The moment when Toby looks down and realizes that the demonic hieroglyphics are all over his body...
      • In his last possession, while on the escape rocket, Beast-possessed Toby breathes fire.
    • When the Doctor asks where the Beast is from, it claims to predate time, light, space, and matter. The Doctor points out that there's no way life could have existed that far back. The Beast asks, "Is that your religion?" Holy shit. The Doctor also asks which devil it claims to be, considering how many different religions there are in the universe. The Beast's response? All of them.
  • "Love & Monsters":
    • The group of all the Doctor's fans, who form a fanclub — most end up absorbed by another alien to die gruesomely (although one survives... as a mere face in a street tile...). It's hammered in that they're people, with friends and family, especially when you see them having fun together in LINDA. Moreover, the first ones absorbed retain their awareness, and are mentally linked to their absorber... Which means they knew exactly what he intended for the rest of the group, and had to watch helplessly as he consumed their friends one by one.
    • Take that a step further. The lone survivor now exists as a human face in a one-inch thick street tile, and her boyfriend tells the viewer that they still have a sex life. One part nightmare, one part squick. Can we get a brain bleach chaser with that?
  • "Fear Her":
    • The episode of the girl who traps other children into her own drawings, especially the scene where a drawn kid screams at the screen... with no voice.
    • That red drawing in the closet of her abusive dad was terrifying, especially later when all of Chloe's drawings come to life and you see both her and her mother cowering in fear from the booming, menacing voice...
      Chloe's Dad: "CHLOE! I'M COMING TO HURT YOU, CHLOE!"
  • "Army of Ghosts"/"Doomsday":
    • Finally, in the finale, we see Daleks and Cybermen waging all-out war on humanity and each other, Cybermen disguising themselves as dead loved ones to gain humanity's "trust", Daleks using their plungers to reduce a man's head to a dried-out husk (and of course, seeing nothing wrong with it), Cybermen managing to implant mind-control devices attached to your brain (and yes, we do see one ripped out), Daleks shooting anything that moves above Canary Wharf, Rose almost being sucked into Hell along with every Dalek and Cyberman on the planet and, finally, Cybermen converting humans in the basement and, by the end, only doing half the job.
    • Even worse is where the "ghosts" are revealed to be friendly ... and seeing how ghosts are everywhere - these ghosts turned out to be Cybermen. What makes it worse is during the "ghost shift" that reveals the Cybermen, you can hear their walking sound. Imagine walking and seeing some "ghost" and it turns out to be a death robot ... worldwide.
    • We see the Cybermen appearing across the world, in places like France and India, on live TV attacking people, and invading the home of a family. And somehow, despite it being a "victory", it's nowhere near as terrifying as only four Daleks emerging from the Void Ship.
    • The last line of "Army of Ghosts". Everyone on planet Earth is screwed, regardless of whether they are Cybermen or human.
      Dalek Sec: "Location: Earth. Life-forms detected! (Rest of the Cult Of Skaro joins in) EXTERMINATE! EXTERMINATE! EXTERMINATE! EXTERMINATE!"
      • And then the Doctor realizes what the Cult meant by "Time Lord science", as they take the Genesis Ark into London's skies... and open it to reveal it's a dimensional prison housing countless Daleks.

    Series 3
Gone Horribly Wrong at its finest!
  • "The Runaway Bride":
    • Millions of giant ancient spiders crawling out of the Earth's core. To eat you. Merry Christmas!
    • The Doctor himself is what made the special scary. For the first time we get a glimpse of what happens when Ten is pushed too close to the edge (which becomes something of a feature of series 3 and 4). The look on his face as he watches the baby Racnoss die is just kind of chilling.
  • "Smith and Jones":
  • "The Shakespeare Code":
    • The opening. A young man serenades a young woman, who invites him inside for a little you know what... and once there she and her mothers tear him to pieces, literally. As he's screaming.
    • An apparently sweet-looking girl, actually a hideous witch who uses voodoo to kill her victims! (And the Doctor shuts her and her mothers up in a pocket dimension for eternity! When we seen them briefly in a Season 4 episode, they're still screaming.)
  • "Gridlock":
    • A drug which induces bliss but kills a few minutes later! Space crabs that eat people who venture below the motorway! The fact that there's nobody on the top of the planet anymore, and it takes FOREVER to cross the motorway! It leads around in a giant loop, with all of the exits sealed off, but nobody in the main lanes has a long enough lifespan to realize it!
    • The beginning. Oh my god, the beginning! The way that their hopes are dashed as the car stopped, how terrified they are as the car is being ripped apart! How hysterical their voices are as they scream in fear! And how all through it, the oblivious Sally Calypso on the monitor is just cheerily signing off as the motorway-goers are screaming in terror as they are eaten! The way the lifeless hand slides off the T.V. screen... it all makes an intro so horrifying that it could give the opening for "School Reunion" a run for its money.
    • Apparently, there is a non-existent police force in the Highway. Just how many people realized this and got away with their criminal acts?
  • "Daleks in Manhattan"/"Evolution of the Daleks": More Daleks! This time, one Dalek became a tentacled human hybrid just by sucking another human into its armour! The evolved form of the Dalek is Nightmare Fuel in itself. The exposed pink brain of the hybrid, the humanoid posture... Especially, for some reason, the mouth. It's way too small and low for the creature's face, and it's always smiling.
  • "The Lazarus Experiment":
  • "42":
    • A living sun, which possesses people and causes them to burn their loved ones until there's nothing left but a shadow on the wall!
    • Oh, man, "42"... Everyone trapped on a hellishly hot and red-lit spaceship that's about to crash into the sun, claustrophobic dark tunnels, getting trapped in disengaged airlocks, people getting burned into dust and possessed by a sentient sun, all of this culminating in a screaming and absolutely terrified Doctor trying to stave off the aforementioned possessions, all while being pushed into a minus 200 deep freeze? The line: "You should've scanned for life!" in particular. This is one of the very, very few times we see the Doctor completely, out-of-control terrified. Just plain disturbing.
    • The Doctor's scream of pure agony as the cryo-pod activates sounds way too real.
    • "Burn with me, Martha!"
    • "I'LL SAVE YOU"
  • "Human Nature"/"The Family of Blood":
    • Like the previous episode, David Tennant's agonized, hellish screams when the Doctor activates the Chameleon Arch are just a little... too convincing. Counts in-universe too, since poor Martha has to watch.
    • The punishment inflicted on the Family of Blood. Immortality... spent in various horrific prisons. The punishments all narrated calmly by the teenage son was the icing on the cake. Hell, the Family of Blood themselves. They were pretty creepy.
      • This is just one instance of what's truly the scariest thing in the series: what our Technical Pacifist hero, the Doctor, is capable of when he's had enough. Don't cross him. Just don't.
    • And now every time you look in the mirror...
    • Listen carefully as he describes the fate of Daughter of Mine: He doesn't say that the Doctor trapped her in a mirror, he says the Doctor trapped her in every mirror. If even your subconscious takes this the least bit seriously, you are now trapped in an eternal, incredibly creepy game of I Spy that you can never win.
    • What the heck happened to the minds/souls of the Family of Blood's 'hosts'? Naturally you'd assume they were killed, but we see no injuries or possible signs that the bodies were dead... What if the minds of the hosts were still there? Living out the Family of Blood's punishments with them...
      • Though earlier in the episode, Mother of Mine heartlessly brags about how she "gobbled her [host] up" when asked about what happened to them. Though this detail is horrifying in it's own right, it almost seems to be written in specifically to avert any consideration of the above Fridge Horror.
    • Son of Mine makes killers out of the scarecrows in farm fields. No voice, relentless, they just want to kill you.
    • The inhuman scream of Father of Mine as he gets sent down to the mine is just terrifying.
  • "Blink":
    • When it first aired, the episode had a special warning telling parents that the episode was scarier than normal and should be watched during the day instead of at night. Only Doctor Who could make an episode about statues the most terrifying thing in the world.
    • The Weeping Angels don't actually kill you. In fact, they're the nicest psychopaths in the universe because: "No mess, no fuss, they just zap you into the past and let you live to death. The rest of your life? Used up and blown away in the blink of an eye. You die in the past, and in the present they consume the energy of all the days you might have had. All your stolen moments. They’re creatures of the abstract. They live off potential energy.” Kathy Nightingale and Billy Shipton both lived out happy, full lives before dying of natural causes. The Weeping Angels don't kill you, but they still caused the most hardened horror fans to wet themselves!
    • The scene where Sally takes the TARDIS key. While most other scenes use flickering light or camera cuts to show that the Angels have moved, this time the Angels change poses as Sally passes between them and the camera, watching her as she steps in front of them and covering their eyes as she moves away. Even the one in the background. The implication? The viewers are the ones keeping the statues from moving, since they move when the VIEWERS can't see them.
    • The way the doctor ends his easter egg during the proper context. He says "I don't know what stopped you talking, but I can guess. They're coming. The angels are coming for you." while an increasingly loud heartbeat plays over a shot of an angel. The scene has the same energy as when the grace period ends in Slender.
    • "You're not looking at the statue." "Neither are you." Cue Oh, Crap! and a Jump Scare.
    • "Why's [the statue] pointing at the... light?"
    • Larry has to keep his eyes on the statue while Sally tries to save them. He looks away for one second... ONLY A SECOND... and when he turns back around, the Angel is RIGHT THERE, mere inches away from him.
    • The montage of statues, narrated by David Tennant's "don't blink speech".
    • Just the sounds used when the Angels are on screen. It's deeply unsettling.
  • "Utopia"/"The Sound of Drums"/"Last of the Time Lords":
    • The last three episodes include humanoid wildmen, the end of the universe looming, a kindly old man who, when he gets his memory back, turns out to be a genocidal monster who immediately murders his gentle assistant, the utterly eerie pleasure the human Lucy (whose mind the Master destroyed) takes in decimating the global population (she dances to pop music while he does it) and, last but certainly not least, the revelation that the robotic killing machines with childlike voices are actually powered by human brains - those of the last humans in the universe, no less, who cannibalized themselves and went back in time to avoid the end of the universe. And they share minds with one another, though that means out there is the little boy who back on the spaceship gleefully told Martha that his mother had told him in Utopia "the sky was made of diamonds".
    • Listen carefully when Professor Yana opens the fob watch: among the miscellaneous "flashback" sound effects, you can clearly hear the Master's voice saying "Step aside human, and release my majesty." When John Smith opened his fob watch, the Doctor's essence allowed him to choose whether he wanted to resume his life as a Time Lord; Yana, by contrast, was allowed no such luxury: a sweet, innocent old man had the vile mind of a thousand-year old maniac literally forced upon him.
      • The most horrifying thing about Professor Yana is that, according to the Doctor in "Human Nature / The Family of Blood", a Time Lord's chameleon arched self is actually made from a part of their personality. If not for Rassilon, the Master could've been a kindly old Doctor figure rather than the viciously evil person he became instead.
      • Maybe. It's possible that the Master was just a deranged megalomaniac to begin with, as the drumbeats were never mentioned in the Classic Series, and that said drumbeats were just something Rassilon retroactively added on to the Master in the last days of the Time War in order to enact his Evil Plan. Which is horrifying in its own right, because that would mean Rassilon knowingly made an already established genocidal maniac even more of a genocidal maniac.
    • There's also Chantho's fate to think about. The kind, generous, quirky genius with whom she's worked (and developed other feelings) for the last seventeen years suddenly undergoes a total shift in personality and begins opening up their base to invasion by the Futurekind. When she tries to stop him, he electrocutes her without a second thought. Viewers know what the Master's deal is, but Chantho dies having no idea what's going on or why she's being murdered by her best friend.
    • While many fans count the Master's gleeful reaction to killing Jack ("And the best part is...I get to kill him again!") as a Moment of Awesome, it's equally horrific. For perspective, consider the many, many ways a human being can be tortured, maimed, and killed (if you need help, consult Wikipedia); now imagine that knowledge in the hands of a man who is utterly batshit insane, with unlimited resources and a test subject who can't die. Oh, Jack....
    • The Master getting ready to turn the Doctor's TARDIS into the Paradox Machine. It's just a brief shot of the Master standing at the console... with a blowtorch and one of the most psychotic grins ever seen on a face. The sheer malicious pleasure he shows, knowing that he's going to take what is essentially the Doctor's best and oldest friend, and he's going to break her, and twist her, and hurt her... Fridge Horror at its finest.
      • Try re-watching that scene after viewing "The Doctor's Wife" (wherein you find out just how alive the TARDIS really is). It becomes horrific on a whole new level.
    • The description (delivered alternately by the Master and the captured Toclafane) of what humans found at Project Utopia, at the end of the universe. "Furnaces, burning... the last of humanity screaming at the dark. There was no solution. No diamonds. Just the dark, and the cold. All that human invention that had sustained them across the eons... it all turned inward. They cannibalized themselves—regressing into children. We made ourselves so pretty! But it didn't work. The universe was collapsing around them. But then the Master came, with his wonderful time machine, to bring us back home!"
    • Even worst, when the human from the future is asked why they kill their ancestor despite being of the same species. Its answer? "Because it's fun!" followed by a very, very, very creepy child-like laugh
    • And the Master was the Doctor's childhood friend. Which makes everything so much worse, because in a way they're still friends.
    • The grotesque, emaciated Doctor after being aged by 100 years. When aged again, he looks much worse.
      • Actually, he wasn't even aged the second time. He was just given a physical appearance to match how old all of his regenerations combined were. Which makes it even more terrifying and grotesque.
      • The specific way they blurred his features and distorted his voice made the Painful Transformation downright unsettling to watch on broadcast.
    • After the Master unleashes the Toclafane, Martha uses Jack's vortex manipulator to escape. She lands on a hill overlooking London, where we see a horrifying scene of a colossal horde of Toclafane (almost filling the entire sky) descending upon the city and destroying it. The sound of explosions and screams fill the air, and Martha can only look on helplessly before running in the opposite direction as fast as she can.
    • Consider this: John Simm thought his own children shouldn't see what he did as the Master due to it being too disturbing.

    Series 4
  • "Voyage of the Damned": The hosting robots for a space ship turn evil and try to kill any survivors from the previous meteor collision.
  • "Partners in Crime":
    • A diet pill that creates aliens from body fat itself and occasionally from all those other bits of the body, although the creatures themselves were too cute for words. (Which just makes it worse.)
    • The first time the viewer sees the Adipose birth. Imagine you're just primping in the mirror, and then these things start sprouting from your body... and then you dissolve as your entire body becomes them.
  • "The Fires of Pompeii":
    • Pompeiians being turned into statues (which look eerily like the plaster casts archaeologists pulled from the ash molds during excavations) by subterranean lava creatures. What makes it worse, some of the natives of Pompeii believe that becoming statues is the will of the gods and therefore an honor that should not only be accepted but embraced.
    • Imagine Pyroviles overrunning the planet. A scary thought, yes?
  • "Planet of the Ood":
    • The Ood return and are revealed to be a race of aliens turned into willing slaves by lobotomy. Some of them develop glowing red eyes and become vicious. They get their revenge by turning their human captor into an Ood in a nightmarish transformation sequence. It's even worse when the human captors include Everton from Chef! and Percy from Blackadder.
    • The Doctor and Donna come across a cage full of "uncultivated" Ood. They are singing a song that the Doctor can hear, but Donna can't. When he gives her the ability to hear it, she is so disturbed and overwhelmed that she asks him to turn it off again, and the viewer is likely to agrees with her. The feverish intensity and utter despair of those wails...
    • When Halpen turns into an Ood, he peels back his face and vomits up his own brain.
  • "The Sontaran Stratagem"/"The Poison Sky":
    • The Sontarans returning and Martha Jones emerging from a goo-filled coffin.
    • The idea that you could be murdered by your car at any moment.
  • "The Doctor's Daughter": A war fought by very quickly grown clones took place over countless generations with the implication that thousands and thousands of people had died with only an inkling of what they were originally fighting for. How long was the war? Seven days.
  • "The Unicorn and the Wasp":
    • Killer wasps. GIANT killer wasps. As in cow-sized giant killer wasps. A woman had sex with one. And was at least partially genetically compatible.
    • It used A Form You Are Comfortable With to take a human form for that, at least. And the species was explained to be intelligent and peaceful. The one we see in the episode is only the way he is because his mother didn't bother to tell him that his father was an alien sentient shapeshifting wasp, and also abandoned him at birth and stuck him in an orphanage. He was justifiably freaked out when he turned into a wasp when he lost control of his shapeshifting powers due to not knowing he had them.
  • "Silence in the Library"/Forest of the Dead":
    • A two-part story penned by Steven Moffat, involving living carnivorous shadows in a giant space library, plus a cyberspace segment involving vanishing children and a woman with a warped face.
    • Apparently the little specks in bright light are Vashta Nerada, too.
    • "Hey... who turned out the lights...?" Go ahead; shudder.
    • What makes "count your shadows" so horrifying is that it's not impossible to have two shadows. If you're standing between two light sources of similar brightness (Two lamps, or even two windows on different walls) you will have two shadows.
      • More the point that you almost never even notice your own shadow, even when you think about it.
      • It could be referring to the umbra of your shadow, which is the darkest part. You can have multiple penumbras (the lighter parts), but the Vashta Nerada are pitch black. And you can't have two umbras.
    • "The lights... are going... out..."
    • The child psychologist says to a child: "The real world is a lie and your nightmares are real. "
    • The Doctor saying that every creature in the universe has a irrational fear of the dark... only to explain that the fear isn't irrational.
    • Oh God... The Vashta Nerada exist on every world in the universe. Sometimes a person just goes missing....
      • It's also especially implied that they exist on Earth...
      • Implied?!
        The Doctor: [Vashta Nerada] are the dust in sunbeams. ... They mostly live on roadkill, but sometimes a person just goes missing. Not everyone comes back out of the dark.
    • Let's not forget the line by the Doctor after they've fled from Proper Dave.
      The Doctor: [to River] You said there were five people alive in this room, right?
      River: Yes.
      The Doctor: So why are there six...?
      [beat; everyone turns around slowly]
      Proper Dave/Vashta Nerada: Hey! Who turned out the lights?
    • A person's last dying thoughts getting stuck in the suit radio until they fade: "Icecream, Icescream, Ice cream..."
    • Pretty much everything in the virtual world from Miss Evangelista telling Donna the world she's in isn't real onwards. Much of it would fit right at home in a horror film.
      • The idea of being told the world isn't real in general. How your children are only fictions, your life is a complete lie and it's all a dream in someone else's head. Quite reminiscent of The Matrix.
      • The ominous red glow in the sky when Donna takes Josh and Ella home.
      • The children all being exactly the same all over the world. Suddenly their laughter as this is revealed becomes very creepy when you realise because all the children in the world are the same, they all laugh the same way. Yeesh!
      • Miss Evangelista's distorted face, which is also this In-Universe, since Donna and the Girl both scream in terror upon first seeing it. It looks like a Picasso painting.
      • And good God, let's not forget the scene where Donna is tucking her children into bed. They tell her that when Donna isn't there, it’s like they aren't there either, even when she closes her eyes, and then they just disappear in the blink of an eye, leaving the beds empty. (Maybe she blinked.). Donna completely panics and starts screaming and sobbing, because of how she probably thought they were gone forever. A completely real Adult Fear and a big Tear Jerker too because of how most parents can probably relate to it. Even when you know it’s coming, that is pretty horrifying.
      • Donna and Lee being separated from each other as the world falls apart while Donna screams at Lee that she will find him... and then she doesn't, because she thought he wasn't real. Unfortunately, it turns out he was real after all, but because of his stutter, he couldn't call her name.
    • Finally, the cliffhanger:
      "Donna Noble has left the Library. Donna Noble has been saved. Donna Noble has left the Library. Donna Noble has been saved. Donna Noble has left the Library. Donna Noble has been saved..."
  • "Midnight":
    • An unknown and unseen intelligence that repeats absolutely everything said, possessing a woman, causing claustrophobia on a space shuttle and leaving the Doctor completely helpless and broken for once. It's not the monster that's scary, it's the fact that it Mind Rapes the Doctor and then convinces six ordinary people to murder him, and does so very easily.
    • The Doctor is forced to repeat everything the monster says... including her commands to kill him. He is literally made to beg for his own death. Imagine being completely paralyzed, as several people physically drag you to your death, and hearing your own voice say, "Faster!"
    • This exchange:
      The Doctor: (with Sky repeating) "Listen to me. Whatever you want, if it's life or form or consciousness or voice, you don't have to steal it. You find it without hurting anyone. And I'll help you, that's a promise. So, what do you think? (Sky speaks first) Do we have a deal?"
    • It's the only episode in the history of the show in which we never find out what the monster actually was. Good luck sleeping now.
    • Just how quickly a group of ordinary people decide that killing an innocent person is the best response; the whole mob mentality/homicidal rage thing... Because that's something that can and does happen. Not the (also terrifying) alien, you don't have to worry about that... but you can worry that, some day, you just might be stuck in a confined place with six panicking people. You might try and be the voice of reason and they might just straight up murder you for it.
    • The passengers are first considering throwing Sky out. The Doctor goes into a long speech asking them if, deep down, they were truly willing to murder someone. There's a long pause before a woman says "I'd do it," and she's dead serious. Then the creature causes them to all consider throwing the Doctor out too. He does his usual "I'm-competent-and-clever" act that usually causes people to follow him without question. Instead, the other passengers start to question who he is and if he's really good, which ultimately leads to them very nearly killing him at the end. It's the one time we see the Doctor's words utterly torn apart and used against him, and it's downright terrifying.
    • At the climax of the episode when Biff is trying to throw the Doctor off the shuttle, he yells at Professor Hobbes and his son Jethro to help him to do it. A father is forcing his teenage son to commit murder with him.
    • Doctor Who Nightmare Fuel is normally at least somewhat reduced by the end of the episode, because the monsters get defeated. In this one? We have no guarantee the thing is dead. Nor do we know if there are more of them.
    • The Midnight theme. DO NOT listen to that theme late at night in the dark.
    • A planet made of diamonds has been found.
  • "Turn Left":
    • A world where the Doctor and Donna never met, thus the Doctor is killed and every attempted present-day alien invasion of Earth from that point onward is successful, turning Earth into a doomed dystopia. It's not easy seeing one of your beloved characters getting KILLED.
    • Martha, Sarah Jane, her son Luke, Maria Jackson and Clyde Langer, and the members of Torchwood all die in an effort to save others after the Doctor was gone was nightmarish.
      • Sarah Jane and Martha are mentioned to have asphyxiated when the hospital was transported to the Moon. But Luke, Maria and Clyde's fate is more alarming. There's no sign of them.
    • The implication of what brutality and cruelty the governments stoop to during the ensuing dystopia is unsettling. Using ethnic segments of the population as political scapegoats and then shipping them off for 'gainful employment' (and, presumably, oven-related death) is chilling.
      • Three little words out of Donna's grandfather Wilfred: "It's happening again." It might actually be worse than that: the Cybermen theme is playing during that scene, suggesting that the world might be starting to create their own Cybermen as a last ditch effort.
    • "There is something on your back." It freaks everyone out, even a soldier!
    • "The stars are going out..." All set to the Midnight theme.
    • All of this put together, and we are all but told outright that the Doctor is the only thing between this world and total annihilation. You'd better hope he'll always be there.
    • This episode turns the light-hearted and thoroughly Narm-tastic moment from "Voyage of the Damned" where the starship Titanic flies over Buckingham Palace (while the Queen waves!) into pure horror; without the Doctor to save it, the ship crashes into London and obliterates it in a nuclear explosion. And Donna and her family watch it happen.
      • And then the entire south-west of Britain is flooded in radiation.
    • Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf Bad Wolf
    • The entire tone of Donna's World. Everything right from Donna turning right is just bleak. Not helping in the slightest is the music, which is "This Is Gonna Suck" distilled.
    • Donna gives a little speech about how she's not afraid, because she knows that when she does what she has to do, the timeline will be reset, and she'll still be alive, and now with the Doctor!
  • "The Stolen Earth"/"Journey's End":
    • Guess who comes back for the finale? (Hint: They were in two out of the three previous finales. And their freakish creator returns as they begin their grandest invasion of Earth ever.) To further establish the utter brutality of the episode, in one scene both Sarah Jane and Captain Jack are horrified by one word spoken by our returning "friends". While in and of itself it's not that scary, think about the implications. Jack is hundreds of years old, has seen and done everything, is virtually unkillable, and one word terrifies him. Sarah Jane's grown up and had a fulfilling life beyond the Doctor, seen more then most other companions, and in a way grown from a child to an adult. And one well placed word reduces her to tears because she's so scared. You know that when Sarah and Jack have nightmares, they are hearing the word "Exterminate". Just something about that sequence that really drives it home — this isn't an invasion, it's a sterilization.
    • It gets even worse when you realize that Ianto Jones is a survivor of the Battle of Canary Wharf, so he's probably just as familiar and just as hopeless at the realization that they're coming again. Even worse; HIS GIRLFRIEND WAS HALFWAY CONVERTED DURING CANARY WHARF!
    • When they finally established communication with the Doctor, Jack's terrified rant at wondering where the hell the Doctor has been tells you that Jack's afraid of them, even with being immortal. Don't forget: they killed him. And they can keep killing him over and over and over. Jack isn't going to be born for three thousand years. He's got very good reason to be afraid: if they win, he couldn't be there in the first place.
    • Think about it! Sarah Jane was present when Davros created the Daleks and Jack — you never forget the first time... the first time you die that is.
    • Sarah Jane looks at her son as soon as she hears the Daleks' battle cry, knowing what those words mean. That's a massive dose of Adult Fear right there.
    • "The Stolen Earth" gives the Daleks one or two funny bits ("Yes, we know who you are."), but there is enough effing Nightmare Fuel of every kind in the episode. For example (all of these come with the warning that you may negate a perfectly good Wham Episode):
      • Aforementioned reaction of Sarah, Jack and Martha to "Exterminate".
      • Daleks stealing entire planets as part of their master plan.
      • Daleks marching everyone on Earth out of their homes and incinerating anyone who doesn't come along.
      • Dalek Caan screwing with the Time Vortex in a way that beats out even the Doctor.
      • Dalek Caan's current state.
      • Davros' eaten away chest and exposed organs. Ugg.
      • The Daleks effing shooting the Doctor during a subversion of The Meadow Run, leading to an equally shocking cliffhanger.
    • Davros being within 10 seconds of achieving his extremely long life's ambition of ending everything. EVERYTHING. Ever. Period. No backsies. Just a small corner of existence filled with Daleks. "YES! I WOULD DO IT!" indeed.
    • His metaphorical holding a mirror up to the Doctor to show him who he really is — "the man who never carries a gun..."
    • The dialogue leading up to his "THE DESTRUCTION! OF REALITY! ITSELF!" Davros is going into great detail to explain to Rose and the Doctor how, once the Reality Bomb goes off, it can't be stopped. It is going to spread out and destroy everything. Every planet, every star, every living being in existence is going to be reduced to nothingness — and not just in "our" universe, but every dimension in The Multiverse. Absolutely nothing will survive... except Davros and the Daleks. Think about that — there'd be nothing left except an evil race and their Mad Scientist creator. That's what the final legacy of the universe would have been had the good guys lost, which they came within a hairsbreadth of doing. All of creation reduced to inert particles, and the only exception are Space Nazis.
      • Davros' cry about "THE DESTRUCTION! OF REALITY! ITSELF!" is especially chilling in retrospect from "The End of Time". The exclamation, and the idea in general, is uncannily similar to Rassilon's battle cry before the assembled lords of Gallifrey, and chillingly lends credence to the Doctor's comments on just how far the Time Lords had sunk by the end of the Time War — namely, to the level of the Daleks themselves.
    • The Osterhagen Project. A "last resort" Doomsday Device for planet Earth, for when the human race is doomed beyond saving and their suffering is deemed too great to bear. With the activation of three keys it would launch 25 strategically-placed nuclear warheads beneath the earth's crust and rip the planet apart. Martha, entrusted with one of these keys by UNIT, threatens to use it to ruin Davros' plans. The Doctor is horrified by this, questioning Martha's sanity for even considering such a thing. After Earth is saved, he urges her to "save the world one last time" by destroying her key. Just the notion of such a project even being conceived (in fiction or in real life), and simply imagining any kind of scenario in which such a solution would be considered, is Nightmare Fuel aplenty.

    2009 Specials
  • "The Next Doctor":
    • The specials-only year started with a bang, with Christmas 2008 bringing the return of the Cybermen, who create animal-like ninjas with dog brains. Oh, and more brain-electrocution and ambushes, of course.
    • The "fugue state" Jackson Lake suffers from? It's a real condition. You could have it right now, and you wouldn't even know it....
  • "Planet of the Dead": Easter 2009 gave us a man being burned to a skeleton as he steps through a wormhole, and a vast swarm of killer stingrays that turn planets to sand within a year.
  • "The Waters of Mars":
    • Russell T Davies said that this episode would be very scary, going on to describe it as "nightmarish". Consider how many people were left hiding under the bed after episodes that were not intended to be that scary. How did he do?
    • Monsters that infect you with the very thing that makes up 60 percent of your body, or over 70 percent of this planet's surface. One drop is all it takes. If you're literally anywhere else other than the small, tightly enclosed, easily destructible environment the episode takes place in, infection is only a matter of time. Water can get in anywhere.
    • "Water is patient, water just waits. Water always wins."
    • During the Doctor's first meeting inside Bowie Base 1, and his eureka moment, as the names of all the in-the-flesh characters in that very room were being spouted off, it goes to a webpage showing that they die on that very day. The Doctor knew that he couldn't do anything to change it, beause it was a Fixed Point in time and how sorry he seemed for them.
      • When the Doctor realises that he is the only Time Lord left, and that consequently, he makes the rules. Nothing scarier than a man who rules reality, and is now willing to abuse that fact.
      • Then what makes him halt. Specifically, the companion-of-the-week killing herself to preserve the order of time.
      • The Time Lord Victorious speech can be compared directly to the Master's conversation with the shrunken Doctor in LOTTL. The similarities in the mindset of the respective Timelords at those points are REMARKABLY similar, and provoked physical shaking and symptoms one might possibly associate with Mind Rape. They even say 'tough' in the same way. Oh, and in The End of Time, he quotes him directly- "Funny? No? Little bit?".
      • "I'm a Time Lord. I HAVE THAT RIGHT." Now didn't that make the hair on the back of your neck stand up.
      • This episode puts right out in the open a fact that often gets sort of lost in the Doctor's Cloud Cuckoolander and Bunny-Ears Lawyer qualities: The Doctor is mentally ill, and fairly unstable. In The Waters of Mars it wasn't made cute or funny; it was dark, and serious and deadly, and not ignorable. That was scarier than any villain or monster they've had on the show.
      • A) What happens at the very beginning of this incarnation? The Doctor casually rewrites the timeline. Why? Because Harriet Jones, the Prime Minister fated to bring in a golden age for Great Britain had ... dared to not trust that he would always be there to save them. So this isn't the first time the Time Lord Victorious came out.
      • B) What incarnation of the Doctor is this? #10. Add one for the War Doctor. Add one more for successfully suppressing a regeneration. #12. When was the Valeyard predicted by the Timelord Council? Between the 12th and final regenerations. Had the mission commander not sacrificed herself to preserve the timeline, just how close were we to the Valeyard personality achieving dominance?
      • It's not just the Master; the Doctor's Sanity Slippage also parallels that of the Time Lords in "The End of Time". During the War, they went mad with their own power, to the point of being willing to destroy the universe to "ascend to a higher form of consciousness". This was why the Doctor had to kill them in the first place. Now bear in the mind that the Doctor was able to do that — to destroy not one, but two all-powerful civilizations, all by himself. Then realize that if he were to go down the same road, there might be no one at all capable of stopping him.
      • What makes that final scene even more unsettling is that the Doctor's cocky, I'm-really-so-very-awesome-me smugness in that scene isn't a million miles off from how he's behaved in other episodes after beating the baddie of the week... except this time, it's presented in a much more unsettling light. Rather than everyone around him boosting him up by fawning over how great he is in dazzled awe, they're utterly freaked out and terrified by him. The fact that it's one of the most matter-of-fact A God Am I moments ever makes it far more unsettling than a million ranting megalomaniacs.
      • In "The Runaway Bride", Donna told Doctor that he needs someone to prevent him from going too far. She was proven COMPLETELY RIGHT in this episode. Though this is nothing new, all the way back to the First Doctor, Ian Chesterton stopped The Doctor from bashing a caveman's skull in with a rock. This is more or less canon that The Doctor ever since, was inspired for one reason, to keep companions, to keep his humanity in check and prevent his darkness from taking over.
    • The Doctor sonic-ing the Gadget robot and Roman screaming in pain because his brain is connected to the robot. The worst part of it all is that The Doctor is completely unaware of the damage he's causing, running around with a big grin on his face.
    • The manner in which the Flood transformed people into hive-minded water zombies was utterly terrifying. Bonus points for the tremendous Tear Jerker of Steffi desperately turning on a recording of her children during her last few seconds of consciousness, before emerging from the room she'd been sealed into (after a behind-the-back view of the transformation) to terrorize her former crewmates. Then adorable Roman's living example of the 'One Drop' being fatal.
    • The fact that the Flood manages to momentarily pass as one of the base crew, even conversing with Yuri, who doesn't notice as it completely takes over. Then it speaks with her voice, the only time it ever speaks.
      The Flood: Earth has so much water... We should like that world so very much.
      • Which might make it more disturbing. The Flood can speak, but it just doesn't bother.
    • The Doctor in the TARDIS, staring, being aware of the consequences of his actions and his impending end, and the Cloister Bell begins to ring...
  • "The End of Time":
    • What happened at the climax of Part One with the Master turning EVERY human in the world, apart from Donna and Wilf, into a copy of himself. Gwen, Martha and Sarah Jane Smith never saw that coming, did they... Nor Jo Grant or Ace or the Brigadier or any of the Doctor's other companions on Earth, living or dead.
    • It's heavily implied the Master eats people and just leaves skeletons. Imagine seeing the face pictured in this folder falling from the sky on top of you while a psychotic voice yells "DINNER TIME!!" right before you die.
    • Remember the transformations happened during Obama's inauguration speech. The "filmed" inauguration speech. Imagine the horror of the people rewatching it.
    • How Time Lords decided to save themselves? They decided to initiate the Ultimate Sanction - to create a time paradox so severe that it would rip the Time Vortex apart, destroying the universe, and to use the free energy to Ascend to a Higher Plane of Existence! No wonder Doctor was so freaked out!
    • It turns out that the Master is crazy because (at least mostly) Time Lords put the signal of their heart into him to save themselves. So it makes them responsible, partially, for MANY of universe's disasters.
      • Making it worse is that the Master was a megalomaniac SOB long before the Time Lords put that signal into him. Rather than turning an innocent man into a psychopath, they turned a psychopath into a monster, all just to save their own skins.
    • The Doctor's mention of the horrible things that the Time Lords would bring back from the War if they were released. We may never get to see them, but that just makes it worse. Just the expression on the Doctor's face alone makes you realise that, to him, the Time Lords returning is HIS Nightmare Fuel. This is the guy who tells anyone he meets that the Time Lords were great and awesome — WERE being the operative word. Then he takes up the gun...
      "You weren't there, in the final days of the war. You never saw what was born. But if the time lock's broken then everything's coming through and not just the Daleks but the Skaro Degradations. The horde of travesties! The Nightmare Child, The Could-Have-Been King with his army of Meanwhiles and Never-Weres... the war turned into HELL! And that's what you've opened: right above the Earth! HELL is descending!"
      • The Time War. So the two most powerful civilizations in the universe ever are going at it with the gloves off; bad enough. Some of the weapons are creepifying just by their names — the Dalek fleet that "flew into the jaws of the Nightmare Child" is one hell of a Noodle Incident to ponder. The use of time travel to constantly resurrect the warriors, only for them to die again and again, hundreds of times? But worst of all is the simple fact implicit in its name: because it's a time war, you can never really meaningfully say that it's over from an internal perspective. It's just sealed away, with no escape....
      • Here's some lovely Fridge Horror for you — in the old series, the Time Lords all wore robes coloured according to the Chapterhouse they belonged to. In "The End of Time", every single Time Lord is wearing Rassilon's red-and-gold. Based on what we saw of Rassilon, what do you think happened to the other Chapterhouses?
    • The thought of the Time Lords returning made the Doctor pick up a gun willingly. This was after he rejected taking a gun multiple times. That's how bad the situation became.
    • The post climax scene with the nuclear bolt and the two doors. The Doctor is looking at Wilfred, who will most certainly die if he doesn't sacrifice himself in his place, and declaring him "unimportant" and at the same time rambling about how important he himself is. It's a terrifying moment wherein you briefly think the Doctor is utterly and completely willing to sacrifice an innocent man because he thinks "The Doctor" counts for more. This is made more horrid by the fact that Wilfred had seen such a move coming, as earlier he had called the Doctor out on his willingness to put a Time Lord's life before that of the entire human race, and is still telling the Doctor to 'let him die'. *shudder*
    • "I've lived too long". This realization is what convinces the Doctor to make the sacrifice. The obsession to continue living despite the fallout to the innocent is what had driven Rassilon to the Ultimate Sanction. Turning into Rassilon scares the Doctor more than being hit with half a million radons.
    • This whole episode is more tragic in retrospect: Ten knew he was regenerating for the last time. And he could do nothing to stop it.

    Series 5
  • "The Eleventh Hour":
    • Kids, see that crack in your wall? It's got a murderous shapeshifting alien behind it which looks like the hybrid of a moray eel and xenomorph. And if you look into the crack there is a giant eye that will look back at you.
    • One night that murderous alien made his way through the crack and into your home. Where it went into hiding, without you knowing, for over ten years.
    • Everything about Prisoner Zero. It's looks scary enough without the Paranoia Fuel linked to it. Anyone you know go into a coma recently? Prisoner Zero might be masquerading as them. In fact, it could be watching you...right you look at this page...and you won't even notice. Thanks to Perception Filters, there could be many horrible things you aren't noticing...
    • "Oh, I'm getting it wrong again, aren't I? So...many...mouths."
    • The teeth of the transformed people are hugely creepy.
    • The mixed up voices were creepier for some, especially when the little girl uses the woman's voice or the man barking instead of the dog, diving headfirst into the Uncanny Valley.
      • The woman using the girl's voice to taunt the Doctor about the cracks in the Universe, then switching back to the correct voice, as if it did that on purpose. "The Doctor in the TARDIS doesn't know. Doesn't know~ Doesn't know~" It's quite possible Prisoner Zero does know.
    • There might also be hidden rooms in your house which you can't notice and which contain evil shapeshifting monsters. If you just look in the corner of your eye...
    • The sequence where Amy is going into Prisoner Zero's room, and the Doctor — the Doctor! — is absolutely terrified, screaming for her to turn back, and she just keeps going... "Walking down a hallway towards a door that shouldn't be there while someone screams not to open it? Hey, who needs sleep?"
    • Prisoner Zero was in that room for 12 years and had forged a mental link with Amy strong enough to knock her out by the time she was an adult. What would having an alien creature who had done something so awful that it's guards are willing to destroy a planet to stop it do to the mind of a little girl as she grew up? Some fans have even pointed out Amy shows signs of mental illness. From that perspective, she really needed those psychologists.
    • The Atraxi were willing to destroy an entire planet just to get rid of him. Just what the hell did Prisoner Zero do for this extreme action?!
      • The Doctor does make a fairly simple case that there must have been a less "extreme" method, since one would assume there must be a method for dealing with major convicts on planets that you can't just torch. In the process reminds us why he's so greatly feared as to get his own Pandorica.
    • The picture taken by the Hubble Space telescope a few years ago. [1]
  • "The Beast Below":
    • This episode has Smilers and their demonic frowns.
    • And the Test Card F girl singing an Ironic Nursery Rhyme to the condemned...
      Girl: A horse and a man, above, below./ One has a plan but both must go./ Mile after mile; above, beneath./ One has a smile, and one has teeth. / Though the man above might say hello, / Expect no love from the beast below! [cue the elevator plummeting, then the floor opening]
    • "This, then, is what has been done to preserve the safety of the British people. May God have mercy on our souls."
    • The end, when it's discovered what's so horribly wrong about the ship having no engines. It's not just that it oughtn't be moving, it's that they're torturing a star whale who ''volunteered'' to help, to achieve propulsion.
    • The Doctor's immediate assumption that his only choice is to burn out the star whale's brain in order to save the humans and to spare the whale any further pain. This is a horrible choice—but two things rev it Up to Eleven: the Doctor knows the creature is sentient, and the Doctor is telepathic. Yet he never once thinks of using his own abilities to communicate with the creature. He just jumps into "I must destroy" mode and never comes out of it. Now think about all the times that the Doctor has decided that there's only one thing he can do...and realize how many innocent sentient creatures may have been destroyed by the Doctor.
      • It must have been a lot, considering it was revealed in the next season that an entire military group is devoted to defeating and killing him. Let's not forget that there was an entire order — The Silence — dedicated to preventing the Doctor from answering a pretty simple question.
    • At the end of the episode Amy points out that the Star Whale was a comparison to the Doctor's own willing nature to help humanity. So why was the Doctor so WILLING to end the creature's pain without consideration for its sentience? How often has the Doctor looked for a "painless way out" for all of his OWN suffering?
      • The Smilers' faces are made of porcelain... And each face takes up 50% of the head... And there's -THREE- faces.
      • That's not the creepy part. The creepy part is that the Smilers were never explained.
    • The fact that the Queen had lived through her 10 year reign many times, each time discovering the secret and being presented with this option:
      (forget) (abdicate)
  • "Victory of the Daleks":
    • In your brightest moment, you're told that your inventions are actually planetary exterminators, every single thing about you is a lie, and that you're a bomb that's gonna blow up in a few minutes.
    • Guess why it's called "Victory"? That's right, because the Daleks win.
    • When the "Ironside" is introduced: "I-AM-YOUR-SOL-DIER." Not again. (See classic Season 4 for the reference)
      • Watch in hindsight, knowing their plan. That is distinctly a note of smugness in those mechanical tones — it knows they've set it up so that the Doctor will lose this time and it's already rubbing his face in it.
  • "The Time of Angels"/"Flesh and Stone":
    • "That which holds the image of an angel becomes itself an angel". And consider, in addition, that while you are watching these episodes, your screen is holding the image of an angel.
    • Look in an Angel's eyes long enough, and it can come out of the image you have of it in your brain. Now think back to how many times there have been close-ups of the Angels' faces, and suddenly those statues are even more terrifying. And this happens to Amy.
    • "If [they] have two heads, then why don't the statues?"
    • Angel Bob delights in providing nightmare fuel:
      • "Bob, keep running but tell me, how did you escape?" "I didn't escape, sir. The angels killed me, too. They broke my neck." Scariest. Conversation. Ever. What makes it really creepy was how emotionless he said it. He was being so scared in the beginning that the monotone makes you KNOW that something's horribly wrong.
      • "And when you say you're coming, you mean..." "That's right sir, the angels are coming.". Scariest part of the episode, hands down.
      • When the Doctor asks Angel Bob why the Angel in Amy's mind is forcing her to count down. "To make her afraid, Sir." "Yes, but why?" "For fun, Sir."
    • The Doctor has to shoot the globe that's keeping an entire horde of Angels at bay.
    • The soldiers shooting at the Angels in the tunnel... not because they actually expect the bullets to work, but to use the muzzle flash to light them up.
    • The Doctor, Amy, River, Father Octavian and the Clerics running through the Byzantium, having to periodically shut the lights off in order to open the doors.
    • The horrible, demonic screeching that passes for the Angels' laughter.
    • The Doctor and River leaving Amy, who must keep her eyes shut at all times or the Angel inside her head will get free, and the Clerics alone with the Angels in the forest. The crack seems to be calling to the Clerics — who walk over and are rewritten out of time, like they never existed. Amy is left completely alone, essentially blind, and must walk through the forest full of Angels as if she can see, because only the illusion that she might be able to see them is keeping the Angels from attacking.
    • The crack beginning to open is terrifying. As the Clerics are keeping tabs on the Angels, a terribly creepy sound echoes through the forest and the time energy gushes out. Immediately after that, the Angels become almost inconsequential.
    • The Doctor explaining what the time energy will do to Amy: "If the time energy catches up with you, you will never have been born. It will erase every moment of your existence. You will never have lived at all."
    • The crack is widening — and it can Ret-Gone people.
    • When just dying is a pretty good outcome (see also "The Big Bang"), things are pretty firmly in NF territory.
    • The Angels move in the most creepy, unsettling way imaginable. Worse, Amy has her eyes closed the entire time, and then she drops her communicator And when the barrier sealing off the forest rises up there's an army of angels just standing there. Who's at the front to greet them? Bob, the one who told the Doctor his neck was snapped and the angels were coming''.
  • "The Vampires of Venice":
    • When the Doctor muses about what would be so bad that it wouldn't mind being thought to be a vampire.
    • Their true forms are aquatic beings with horrifying teeth, and you can become one if you survive the blood transfusion.
    • The creepy room where they actually do the "transfusion". Not only is it creepily lit and stone, but they also strap you to a chair.
    • There's the end. Notice how all the people have disappeared, and it's silent? Sweet dreams.
      • If you look at the cloud line right near the very end you can see the reason for the silence: the crack in time and space that becomes the main plotline is hidden there.
  • "Amy's Choice":
    • When the Doctor and Rory leave Amy with the Dream Lord:
      "And now he's left you with me. Spooky old not-to-be-trusted me... Anything could happen."
    • The scene where the Doctor falls asleep for a few seconds, and then wakes up just long enough for him to run a few feet, and then put him back to sleep again...
    • Birdsong. That's right, Doctor Who has now made birdsong scary.
      "Cold can burn, sofas can read."
      • Pay close attention. It first appeared in "The Eleventh Hour" when the newly regenerated Doctor wakes from being smacked in the head by Amy with a cricket bat, but if you pay close attention to the birdsong, it follows the same pattern of the twittering chirping noise that the TARDIS makes during dematerialization.
  • "The Hungry Earth"/"Cold Blood":
    • This exchange:
      Moe: They did it to me. While I was conscious.
      Amy: Okay, you're really freaking me out. Did what?
      Moe: Dissected me.
    • Amy waking up in a glass coffin.
    • Amy getting sucked into the Earth, convinced she is going to die.
      • Somewhat scarier when you realize from watching Confidential that Karen really is claustrophobic and those tears and screams are real.
    • The people getting Retgoned in "Flesh and Stone" was bad enough, but it gets even worse when it happens to an actual main character that we'd gotten to know over several episodes. And who was already dead, so the crack just stole the one kind of existence he had left.
    • If that's not bad enough, in "Cold Blood" the Doctor actually reaches into the crack and pulls something out, which we're not shown for several minutes. IT'S A PIECE OF THE TARDIS.
    • First it's statues, then it's darkness, then water, now the ground beneath our feet. Is anything safe?!
  • "Vincent and the Doctor":
    • You can't even see the Monster of the Week. More Paranoia Fuel.
    • This is not an isolated occurrence. These vicious and invisible creatures drop out of their pack whenever they can't keep up. This could happen again.
  • "The Lodger":
    • It begins around 2:30 of this clip: [2]. Nothing bad really happens, but Eleven seems to perceive a threat.
    • The silhouettes of the "people" at the top of the stairs... Luring victims up the stairs, where we hear them screaming as they are consumed by a creepy, hungry, half-sentient machine. And their burnt remains seeping down into the room below... yeesh.
    • The worst thing in that episode is the fridge horror. They repeatedly state the human population is 6,400,000,026. This number is at least 299,999,974 people less than what the population was at the time in real life. Those three hundred million are the deaths from all those alien invasions Whoniverse Earth suffers. Even scarier are the time cracks. Sure, there've been invasions, but then there are those cracks in the universe continuing to erase everything from history. So it's possible that the "miscount" actually accounts for the people that have been retgoned from existence. Yeesh!
    • After having a "will they or won't they" dilemma all episode, Craig and Sophie have finally decided to act on their feelings and become more than just friends, warmly thanking the Doctor for all that he's done for them as he departs. However, in a rather cruel last minute twist, they won't get to enjoy their relationship upgrade for long. Because there's a crack in the wall of Craig's kitchen and it's rapidly expanding - its eerie, unnatural light filling the room. "Flesh and Stone" and "Cold Blood" have made it very clear what the cracks do to anyone who get near them, so it's not hard to imagine Craig and Sophie were killed and erased soon after the episode ended. Thankfully, if that was case, rebooting the universe restored them, since we see them again in "Closing Time".
  • "The Pandorica Opens":
    • The whole idea of the Alliance: Daleks, Cybus Cybermen, Sycorax, Silurians, Hoix, the Weevils out of Torchwood, Autons...
      • Even worse. All of the Doctor's enemies (and some other aliens) gang up on him and lock him in the Pandorica, which was built to prevent him apparently blowing up the universe. It didn't work.
    • "There was a goblin, or a trickster... Or a warrior... A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. And nothing could stop it or hold it, or reason with it. One day it would just drop out of the sky and tear down your world." This is the description of the monster in the Pandorica, and it's the Doctor. This is a description of the Doctor as he is seen by his enemies. Think about that.
    • The Cyberman's helmet springing open to reveal the rotting human skull inside. It's attempting to acquire a new body by sealing Amy's head inside it! "You will be assimilated".
    • After listening to the Doctor begging and pleading to his enemies to be let out of the Pandorica to save the universe, then panning out to see every single star exploding and darkness and silence covering everything, THE FUCKING BACKGROUND MUSIC SHUTS OFF and the scene fades to black in silence.
    • The outcome of a a Total Event Collapse. The Earth and the Moon are the only things left. Not just that it's the only planet left, but it's the only planet to have ''ever existed.'' Every single alien race, good or bad, never came to be. Earth is utterly alone, with the only intelligence left being the Silurians. Thing get worse when what's left starts suffering the same fate.
    • Oh, and here's something you may like. The Cyberman said that "all universes" will be deleted. That's right, a Class Z. And if The Multiverse truly exists, this means all of creation was wiped out during "The Big Bang". That includes our reality. WE NEVER EXISTED.
    • The Doctor hinting what he thinks happened to Amy's family: That they were erased by the crack, and judging by the number of rooms, that could easily include siblings she has no clue (n)ever existed.
    • One more: Van Gogh's painting of the TARDIS exploding, with imagery eerily reminiscent of his magnum opus Starry Night.
    • "I'm sorry, my love."
    • The "outside force" landing the TARDIS... with it's door facing a rock wall. On a place in space that is likely about as far from the Earth as the Sun. Thus probably Mars. Also, apparently at least the rock wall's edge was included in the TARDIS' time loop, since it remains even after the erasure of it's the universe's existance. Special design, or Hand Wave?
    • The Doctor screaming: "PLEASE LISTEN TO ME!!!" when the Pandorica closes. The Doctor has never sounded so desperately scared in his life.
    • The Pandorica itself is terrifying when you think about it. It's a very small box where you can't move, not even your head. And it won't let you die, because that would be "escaping". Now imagine what would've happened if Rory hadn't freed the Doctor.
    • "Lucky" Amy; she was "dead" the whole time. Lucky it didn't heal her upon entry... if you imagined what the Doctor would have gone through, what about Amy? Look what an apparition of an ancient and tortured Rory was like; and he wasn't immobile.
    • Imagine you died. Killed. Gone forever. Then, suddenly, you're alive again, in an entirely different place, in an entirely different time, with everything that you've known being as distant as a dream. As if your entire life never happened... And then, you run into someone you thought didn't exist, someone you loved and they don't remember who you are. You desperately try to get them to remember, but before you can, your body, moving on its own, kills them. Not only do you have to live with killing the one person you can recover from your old life, but you are a false machine copy of who you think you are, and you're working for the bad guys.
  • "The Big Bang":
    • A half dead/half alive fossilized Dalek screaming "RESTORE! RESTORE! RESTORE!" as it tries to reboot itself.
      • It also shoots the Doctor but fails to quite kill him instantly, leaving him wincing in pain for a good chunk of the episode.
    • River Song is pretty scary now. She made a Dalek beg for mercy. A freakin' Dalek. She didn't just get it to beg - she got it to metaphorically roll over and scream for mama. You can actually hear in each iteration of the word 'mercy' its progression from 'Oh, Crap!' to 'please don't kill me' to 'OHMYGODI'MABOUTTODIE!' And all in the same emotionless tone. Just be glad she's on our side. We believe...
    • River Song. It's a combination of the fact that she not only killed a man, she killed "a good man. The best man I ever knew" and the fact that the last time she sees the Doctor in The Big Bang she tells him that soon he'll find out who she is and then "I'm sorry, but everything will change." Neither of those sound good.
    • The question is, WHAT DID SHE DO TO THAT DALEK?!
    • "It died."
    • Rory gets about as close to And I Must Scream as you can get while still fully mobile, standing guard over Amy for almost 2000 years, and not even being able to sleep through any of it. Of course, the fact that he takes this on willingly (and it's even his idea in the first place) also means it's a killer Moment of Awesome, Heartwarming, and Tearjerker as well.

    Series 6
"It's frightening, unexpected, frankly a total, utter splattering mess on the carpet, but I am certain, one hundred percent certain, that we can work this out. Trust me. I'm the Doctor."
  • "A Christmas Carol":
    • The Sky Shark.
    • According to Steven Moffat, said Sky Shark was inspired by his own childhood nightmares that sharks would be able to leave the sea and eat him, possibly as a result of evolution.
"The Impossible Astronaut"/"Day of the Moon"
  • Series 6 gets kick-started with the Silence — a race of aliens where you turn to run, and instantly forget there's anything there to run from.
    • "Run, get out of this room right now!" A reminder from Amy to herself.
    • Also, they look like a cross between Slender Man, the Gentlemen from Buffy, and Edvard Munch's "The Scream". Not quite seeing the "Scream" inspiration? Wait 'til it opens its mouth...
      • And then it absorbs all the local electricity to blast you into... mostly unrecognizable bits.
  • "The Impossible Astronauth": Somebody killed the Doctor. And by killed, it doesn't mean a regeneration. It means actual death. The question is, who the hell would do such a thing!?
  • "Day of the Moon":
    • According to this episode, we have all probably killed a Silence at one point or another and we don't remember it. That's some serious nightmare fuel, taking a life without even realizing it.
    • Dr. Renfrew, the insane children's home director. And the fact that the Silence have memory wiped him so many times there's just nothing left... His mannerisms, voice patterns and vague stare just make it worse.
      • The children's home itself! An Abandoned Hospital / Orphanage of Fear / Room Full of Crazy hat trick, for God's sake! It's full of writings. There is only one person who could've written it, since it's also written on his hand. AND HE CALMLY WIPES IT AWAY:
        Amy Pond: It's the kids, yeah? They did that?
        Dr. Renfrew: Yes, the children! It must be, yes.
    • Amy sees a whole bunch of Silence sleeping on the ceiling like bats... and one of them starts moving.
  • "The Curse of the Black Spot": Don't get hurt. Something might crawl out of the water and take you away. And then we discover it extends to reflective surfaces, too.
  • "The Doctor's Wife":
    • They let Neil Gaiman write an episode, and its antagonist is a creature with the same level of evil as A.M. itself. It eats TARDISes. Oh, and that voice and the fact that Auntie and Uncle are stitched together from slain Time Lords and who-knows-what-else.
    • The short scene where Amy and Rory are running around in the TARDIS' corridors. The scenes where they get stuck on opposite sides of a door. Where Amy keeps going (three times!) and finds Rory increasingly older and more insane until she finds a dead corpse and hell-curse-you writing all over the walls. Imagine seeing the moldering remains of someone you love. Now imagine seeing that and knowing full well that they died hating you more than anything else in the world.
    • Insane!Rory was stuck in the TARDIS for a long time waiting for Amy and he hates her for it. Before he dies again, he writes on the wall, HATE AMY, KILL AMY, KILL ME AMY HATE AMY, KILL AMY over and over again. Seeing Rory, who is normally the level headed one, shout and scream like that is extremely unnerving.
      • "They hurt me, Amy. They come, every night, and they hurt me. Again and again."
    • TARDISes can mess with time and space. If it could do that internally then it's entirely possible some version of Rory really did live that life and House has been mind raping him for decades before wiping it all out and starting over. Even if it actually wasn't him there's a good chance that scene was created based on Amy's own fears; we learned early on in the reboot that the TARDIS gets inside her head), thus making that scene the product of her guilt at his having to wait for her for so long and her absolute terror of losing him. Imagine watching your loved ones die several times, knowing it could happen again, permanently, any second...
    • After House takes controls of the TARDIS and leaves, the way Auntie and Uncle talk about their impending deaths as if they were just going out somewhere and then dying in mid sentence, their nonchalant tones never changing through the end, is chillingly unnatural. Imagine that you're just talking to somebody and then after a while they cheerfully announce that they're going to die in a few seconds and then suddenly just dropping dead just like that.
    • We are starting to be quite familiar with now a very pissed off Doctor. Suffice to say we have seen on numerous occasions that the Doctor has displayed signs that he could be heading to a darker path, events in "The Family of Blood", "The Waters of Mars", etc. have shown what the Doctor is capable of when his patience is pushed to the limits. Knowing this, the pain and anger he showed when talking to Auntie and Uncle after his discovery makes for a very tense moment.
      • "You gave me hope and then took it away. That's enough to make anyone dangerous, God knows what it'll do to me!" Indeed.
    • One line that seems to be a typical Doctor Badass Boast can be taken in a completely different and terrifying light.
      House: Fear me, I've killed hundreds of Timelords.
      The Doctor: Fear me. I've killed all of them.
    • The glib way he says this once again showcases how easily he can become the Timelord Victorious.
    • Think about it. House did that using only the TARDIS herself. She could do that to anyone, at any time, if she chose. note  We know she's alive, and sentient, and loves the Doctor. That leads us to the conclusion that she can probably get angry. She consciously controls herself if she needs to. Imagine being trapped in the TARDIS being Mind Raped again and again and again, indefinitely, and not being able to escape, because no one knows you're there. No one ever will know. Don't upset the TARDIS.
      • We already know that the TARDIS takes care of her Doctor and his companions. It's repeatedly indicated that the TARDIS is also protective of established timelines, said in "The Doctor's Wife" to be why she always lands where and when the Doctor is needed. Does anyone care to wonder what she's been doing all this time with the Carrionites the Doctor kept as a souvenir in "The Shakespeare Code"?
    • Nephew's fate is disturbing. The Doctor and Idris materialise a TARDIS on top of him.
      The Doctor: He's been... 'redistributed.'
      Amy: Meaning...?
      The Doctor: You're breathing him.
    • From Idris' POV, the Doctor's brilliant plan to escape the bubble universe is, "let's stitch the body parts of all my sisters' corpses together into a skinless Frankenstein's Monster and take it for a jog."
  • "The Rebel Flesh":
    • The Gangers once they undergo Glamour Failure are creepy. This is especially the case the first time the audience is shown it during the second solar tsunami, where they flash between their human and Ganger faces - with their Ganger face locked in a screaming expression.
    • The scene in the toilets where Ganger!Jennifer attacks Rory by punching him in the face, her arm stretching like rubber through the door to do so, then she stretches her head through the hole and speaks to him with the Voice of the Legion.
    • The ending, where the Doctor is confronted by his own Ganger.
    • The disembodied mouth floating in a pool of living goop, whispering "Trust me."
    • This episode is showing once again just how terrifyingly paranoid un-cloned humanity loves to be. Cleaves rigs up a lethal taser based on her fears alone.
    • The scene where one of the Gangers gets dissolved in a pool of acid, which is treated with completed nonchalance by the other crewmembers.
  • "The Almost People":
    • The pile of rotting Gangers who are both alive and fully conscious.
    • The freakish elongated monster that Jennifer turns into, which got lost on its way to a casting call for the next Resident Evil game.
    • The hallway with eyes in the walls.
    • The fact that Ganger!Jenny deliberately kills another, sentient Ganger of herself to convince Rory she's not a ganger. Because, as the Doctor repeatedly tells us, the sentient Gangers are just like real humans.
    • "Push, Amy, but only when she tells you to."
    • The cliffhanger of the episode. "Amy" is revealed to be another Ganger, and is dissolved by the Doctor. The real Amy awakens, and finds herself imprisoned in...well, a metal drawer in a morgue is an apt comparison, heavily pregnant — and going into labor. While the creepy lady in the eye patch stares in at her.
      "Well, dear. You're ready to pop, aren't you? Little one's on its way. Here it comes. Puuuuuusssssh..."
      [the most blood-curdling scream in the series' history follows]
  • "A Good Man Goes to War":
    • The Headless Monks' Attack Chant. Heck, the Headless Monks in general!
    • When it turns out that Melody Pond is a flesh avatar that almost immediately dissolves. Doubles as Tear Jerker.
  • "Let's Kill Hitler": The Teselecta itself is pretty damn creepy, being a shapeshifting time-travelling self-appointed "punishers of crimes against humanity" ship staffed by callous Knight Templars.
  • "Night Terrors".
    • The landlord's involuntary transformation into a doll in. It's scary because at first you think they're going to fake you out, but they don't. It's made to look like it's going to be offscreen... but it isn't.
    • Or Amy's transformation.
    • The dolls and their creepy laughter.
    • The landlord getting sucked down through his carpet while his dog just watches, not reacting in the slightest.
    • The dolls' nursery rhyme, playing over the closing scene on the TARDIS.
      "Tick tock goes the clock, he cradled and he rocked her / Tick tock goes the clock, even for the Doctor"
    • The soundtrack (spoilers, sweetie).
  • "The Girl Who Waited":
    • Amy spends 37 years completely alone, constantly on the run from robots who will inadvertently kill her. Is it any wonder that she hates the Doctor more than anyone else by the time she gets to talk to him again?
    • "This is a kindness" spoken by an army of faceless robots with projectile syringes.
  • "The God Complex":
    • A Hell Hotel that contains everyone's worst fears, with a room for everyone. A great big Minotaur wanders the halls, forced to eat the inhabitants. And Room 11 holds The Worst Thing In The Universe.
    • The Doctor is describing the Minotaur and how it wanted to die. The Minotaur apparently thinks he's talking about himself. The Doctor swears he's not saying he wants to die, but he seems to have trouble convincing himself.
    • Are you praying yet? 'cause that's about the worst thing you could pos... Praise him.
    • The scene where the Doctor finds his room (11) to be most unnerving. He opens the door, and in the dark room, the Cloister Bell of the TARDIS is tolling in low, dark tones. His eyes widen, and then, with a profound sigh, he says, in response to his greatest fear and in resignation, "Of course. Who else?" and we never get to see what it is. The implication is that it is himself.
    • There's the fridge horror. The hotel keeps showing Rory an exit, and we find out later that this is because Rory lacks both fear and faith. But we also find out that the Hotel is a spaceship. Where do exits go on spaceships?
    • The core plot element, how each of the taken's faith is broken by being exposed to their worst fears that are generally otherwise mundane and non-threatening to anyone else.
  • "Closing Time":
    • At the end, River Song is trapped underwater in a spacesuit (by Madame Kovarian and the Silence to be exact), drugged and forced to kill :the Doctor. Enhanced by Kovarian's taunting, and the Silence simply standing there and making no sound.
      • River, freshly Doctor Song, is reading up on the Doctor, when guess who comes out of the shadows. Also, this:
        Kovarian: You never escaped us. We were always coming for you.
      • Plus that terrifying nursery rhyme from "Night Terrors" is back with a vengeance.
        Tick tock goes the clock, he cradled and he rocked her
        Tick tock goes the clock, 'till River kills the Doctor.
      • If you think about it, River's situation at the end of Closing Time comes pretty close to And I Must Scream. River knows that she is about to be forced to kill the man she loves. She will be completely conscious for this, but unable to do anything to stop it. You gotta wonder just how messed up she was after this...
    • From the main story, Craig's Cyber-conversion. Made oh-so-much worse by Alfie's (aka Stormageddon, Dark Lord of All) plaintive wailing, as if he knows what's happening to his father.
  • "The Wedding of River Song":
    • The prequel to this episode sees numerous Silence being held in stasis tubes, with yet another version of Tick Tock Goes the Clock played over it:
      Doctor, brave and good, he turned away from violence
      when he understood the falling of the Silence.
    • Then there's the episode itself. A creepy catacomb full of living carnivorous skulls that eat someone.
    • While it is a moment of awesome, Amy killing Madame Kovarian is genuinely creepy.
      Amy: River Song didn't get it all from you, sweetie.

    Series 7
The Time Zombie in all its glory.
  • "Asylum of the Daleks":
    • How frighteningly blasé Darla is about being a Dalek puppet. The Doctor asks her if she remembers anything of what she was before being "emptied out", and reminds her that she had a daughter, and she simply replies, coldly: "I know. I've read my file." Doubles as a Tear Jerker, and hammers home just how vile the Daleks truly are.
    • The Sickening "Crunch!" that occurs when a Dalek eyestalk emerges from someone's forehead.
      Harvey: Of course. Stupid me. I died outside.
    • It also turns out that even dead people can become Dalek puppets.
    • Oswin's forced conversion into a Dalek.
      Oswin: I am not a Dalek! I am human! I am not a Dalek! I AM HUMAN!
    • Which is soon replaced with:
      Oswin: I AM A DALEK! I AM A DALEK!
    • After watching this episode, you'll probably think twice about having eggs for breakfast.
      Damaged Dalek: Egg-egg-egg-egg-egg-egg-eggz.
      Rory: Eggs? You mean those things? [the roundels on the Dalek's casing; some have fallen off onto the floor]
      Damaged Dalek: Eeeeggz.
      Rory: I don't, I don't know what you want. Those things. Are those things eggs? This? You want this.
      Damaged Dalek: Eeex...sterrr...miiinn...aaate.
  • The Doctor entering the Intensive Care unit. The Daleks there are behind bars and chained up in the dark, lifeless. The Doctor asks Oswin what's so special about them and she tells him that they're survivors of particular wars. The Doctor works it out when she starts mentioning names: "These are the ones that survived me." And then the Daleks sense his presence and start waking up. They've had their guns confiscated, but this doesn't stop them. They tear out of their chains and advance on the Doctor, ready to tear him apart with their plungers. The Doctor finds himself crouched against the wall in sheer terror.
    Dalek: Doc. Tor.
  • "Dinosaurs on a Spaceship":
    • Imagine signing up for a mission to take dinosaurs through space to a new, habitable planet in an attempt to avoid their (and your) extinction... then being woken up from your centuries-long stasis sleep by a couple of demented, chattering robots... only to be immediately flushed out through an airlock into space. Alive. Because the dinosaurs have value, but Silurians don't.
    • Solomon himself was such a monster, the Doctor killed him in cold blood. Nightmare Fuel for the bow tie wearing alien yet again.
  • "A Town Called Mercy": While the Doctor is understandably pissed when he finds out just what Kahler-Jex has done, the actions he takes after Jex hits him with an all-too-apt Not So Different speech leave him sliding perilously close to becoming a Knight Templar version of his "Waters of Mars" persona.
  • "The Power of Three"'s mostly a quiet, emotionally-based episode. Then we suddenly get people with flesh cubes where their mouths should be. You could also add 1/3 of the human population suddenly dropping dead for a few minutes (including the ones we see die on CCTV).
  • "The Angels Take Manhattan": The Statue of Liberty is a Weeping Angel!
  • "The Rings of Akhaten":
    • Imagine what it must be like to be a chorister. You have to sing constantly and perfectly to keep this mummy asleep, because if you stop, even for a moment, it will devour your soul and move on to your home. "Do not wake from slumber, oh god, never wake from slumber." Can you hear the desperation in his voice?
    • The "Old God" makes his appearance, and he is a Genius Loci. He looks like some fiery demon and the Doctor is standing before him without any idea of what to do.
  • "Cold War":
    • The Doctor, Clara, and a group of Russian Marines are in a sinking submarine, all while an Ice Warrior is on the loose and is trying to fire a nuke from the submarine. Every creak and crash you hear could very well be the Ice Warrior ready to attack.
    • The team did an excellent job of making the Ice Warrior absolutely terrifying, with his deep, hissing voice, his unarmored form, and the security footage, with his menacing figure chained to the girders. Then there's the Animated Armor. The sounds he makes out of his armor are pretty scary as well, and the overall claustrophobic setting of the submarine is begging for this trope.
    • What does the Ice Warrior do to his victims? Tear them apart. Not savagely either, but deliberately and methodically. All we see is the Doctor's reaction and a bleached, bloody, hand.
  • "Hide":
    • Let's start off with the ghost that appears. No matter the picture, where it's taken, the angle or the lighting, it's always caught in a photo the same way: Flailing its arms, screaming and towards the photographer. It's actually a time traveller, stuck in a pocket dimension which crumbles in a mere three minutes.
    • Then we have the weird, skeletal creatures which appear throughout the episode. You rarely ever see them, and when you do, they move erratically and suddenly, like glitches in a game. They're twisted somehow, like they spent too much time in the wrong place. Not to mention they feed on fear and reside in a haunted castle and a constantly misty forest full of trees. To top it all off, the Doctor turns around to face one and states out loud that he is afraid of these things. What are they?
    • When we get a close look at them near the end... *shudders*.
    • American soldiers left tins of spam as an offering to the "ghost" with a note that read, "Please stop screaming", and then they focus on one of the photos of the apparition with a wide, gaping black maw. The "ghost" may turn out to be an unfortunate time traveller at the end, but try looking at that image and not shuddering a little.
      • Not to mention the sheer number of both statues and shadows in that episode...
  • "Journey to the Centre of the TARDIS":
    • The revelation of what the charred black zombies that chase the cast throughout the episode truly are. They're the future versions of the Doctor, Clara, and the salvagers that couldn't escape the Eye of Harmony and were burnt alive.
      • For bonus horror, one of the zombies that hounded the Doctor throughout the episode has its hand fused to its face. When the Doctor explains what the zombies are as he prepares to die, he rests his hand on his face in despair. Thankfully, he takes it away as he realizes a way out.
    • One of the two surviving scavenger brothers discovers his "tiny scrap of decency inside himself", and as his brother falls into the Eye of Harmony, he catches him and tries to pull him back up. He is promptly fused to his brother by the intense heat and becomes the Bad Future version of himself, chasing the Doctor and Clara while screaming madly.
  • "The Crimson Horror": The Body Horror of the titular fate — as we see when the Doctor is infected, the victims not only turn bright red but experience a total and excruciating-looking stiffening of their entire bodies, mouth frozen open, before dying.
  • "Nightmare in Silver":
    • This episode brings us the Doctor as the Cyber-Planner. Not only does Matt Smith embrace the madness playing the Cyber-Planner, but he does it so calmly, and sometimes gleefully.
      Cyber-Planner: Doctor, Doctor, Doctor Doctor Doctor Doctor Doctor Doctor!
    • The Doctor electrocutes himself to get rid of the Cyber-Planner. The Cyber-Planner's scream of "That's cheeeatiiing!" is chilling.
    • The Cybermen have undergone some major enhancements which have made them even more dangerous and terrifying. They can teleport in an instant, operate without a head and scariest of all: CONVERT HUMANS WITH ONE TOUCH.
      • Before, there were cybermats, who were about the size of a rat. Now, there are cybermites, who are practically indistinguishable from a regular silverfish, and have all the same creepy crawly abilities. Convert with one touch? It's because that touch comes with dozens of cybermites that jump into any orifice they can find and turn you into a Cyberman from the inside out.
    • What makes the Cybermen even more dangerous is their ability to instantly upgrade themselves to counter threats. Shoot them with a massive cannon, electrocute the water, they will find a way to become immune to that strategy.
  • "The Name of the Doctor":
    • Imagine what the universe would look like if everything the Doctor had done throughout all of his lives were undone. We get a glimpse thanks to The Great Intelligence stepping inside the Doctor's timestream (basically the Doctor's entire life in physical form). Once the Intelligence goes to work erasing the Doctor's actions throughout time. Dozens of stars rapidly start to go out all across the sky. Jenny vanishes since the Doctor was no longer around to save her, and Strax reverts to a typical Sontaran and tries to attack Vastra. And that's just what we could see...
      • To sum up, there wouldn't be a universe.
    • Imagine having your very essence scattered all across time and space into thousands of copies of yourself. Each one is born, lives and dies, and sometimes gruesomely, and you are aware of each and everyone of them; all simultaneously. Throughout this whole experience, you don't know where you are and desperately trying to find someone so you can help them avoid a gruesome death.

    Series 8
  • "Deep Breath":
    • The T-Rex which is bigger than Big Ben.
    • The Half-Face Man and his droids have been stealing body parts for tends of millions of years.
  • "Into the Dalek": Missy's smile. It just screams "SOMETHING IS WRONG HERE"
    • The Doctor inadvertently brainwashes Rusty into possessing murderous hatred for its own kind. The Doctor seems to understand the enormity of what he's done...
      "I am not a good Dalek. You are a good Dalek."
      • The fact that Rusty was able to only see hatred and nothing else. Holy fuck, he knew the Doctor better than the Doctor knows the Doctor. You can truly see the shame in his face when he says "No, there has to be something else there." Remember last week when we got more evidence that the Doctor isn't superhero material? This week, we got that and evidence that he's Anti-Hero material.
    • The Daleks have returned and racked up a huge body count in this story... some of it including their own kind.
    • The Dalek anti-bodies. Basically floating, mechanized eyeballs that activate whenever the Dalek has intrusive organisms inside its shell that liquify said organisms to be used as protein.
    • The Doctor letting a soldier named Ross die! He purposely gave him false hope before letting him DIE! And the worst part is that he doesn't show ANY remorse about, claiming that he was "already dead" and he was just saving the rest of them! Not to mention the thing he gave Ross that would seem to save him instead was a tracker so the Doctor could find out where his body would go! It was at that moment that some viewers decided that they wouldn't even care much for Twelve. (At least until Series 9.)
  • "Robot of Sherwood":
    • The Sheriff of Nottingham does not hesitate to execute an old man who spits in his face by ramming his sword through his gizzard.
    • The robotic knights from outer space burn people to oblivion with cross-shaped beams for non-compliance. Not only is that frightening, it takes place in 1190, during The Crusades, which involved similarly gruesome acts of murder under the abused symbol of the cross.
    • The Sheriff is decapitated in a scene so shocking, it was deemed insensitive to contemporary events with the Islamic State beheadings and cut from the episode. It indicates the robot knights' shuttle fell on him and he was rebuilt into a cyborg.
    • Later, the Sheriff is knocked into his vat of molten gold by Robin Hood and bathed in it, killing him slowly enough that his gold-encrusted metallic hands are seen clutching to the side of the vat in a desperate and failed attempt to climb out before he died.
    • Alan A-Dale finding out he only has six months to live; then again, it depends on whether he believes this odd random person who shows up out of nowhere.
  • "Listen": In many ways, the entire episode is a subversion. It's set up as a "You should be afraid of this perfectly ordinary thing" episode like "Blink" (statues) or "Silence in the Library" (darkness). But in the end, the monster might not actually exist, and if it does it is content to just be left alone. The episode even goes on to insist that fear is a superpower, something that makes the prey more powerful than the predator.
  • "Time Heist":
    • The Teller, and what it can do to you. If it thinks you're guilty, it goes ahead and feeds on that guilt, melting your brain down to soup in the process until it starts leaking out of your eyes. Victims end up with a massive dent in the top of their heads, indicating it gets part of the skull, too. Then Bank'll keep your vegetative husk around afterwards, on display, as a warning. If they don't want the husk around anymore, they Kill It with Fire.
    • Madame Karabraxos incinerates her own clones, taking sadomasochism up to a whole new level.
  • "The Caretaker":
    • The Skovox Blitzer graphically incinerates a truant officer with laser fire. All that's left of him is a charred, severed hand with bits of fingers and the forearm crumbling off as it crashes to the floor. The horror is dampened when the murder victim shows up in the afterlife unharmed, and then it starts up again when he suddenly realizes that he didn't escape.
    • Missy gives her underling a very frightening Death Glare as though there is a conspiracy going on the Nethersphere, like an unsettling undertone of a false paradise.
    • The Doctor showing up at her school terrifies Clara because she knows that the Doctor is a Doom Magnet. When she says "are the children safe?" you can see the horrible possible scenarios turning in her mind.
  • "Kill the Moon":
    • Basically everything about the giant spiders. Writer Peter Harness was told to "Hinchcliffe the shit out of it for the first half" (basically, to make it scary), and it shows.
    • In-universe, it's shown the Doctor leaving and forcing Clara to decide whether to kill a baby or, potentially, the human race, shook her up significantly. So much so she tells the Doctor to leave Earth and never come back.
  • "Mummy on the Orient Express":
    • The Foretold is as grim and ghastly as you could ever expect from a mummy. And if you see it, you have a mere 66 seconds to live.
    • Somewhere out there, there is a cunning individual who knows who and what the Doctor is, invited him to investigate The Foretold in the hopes that they could reverse engineer the technology behind it, murdered a whole train car full of people to force the Doctor's cooperation, knew to seal up the TARDIS to prevent the Doctor's escape or rescuing of the passengers. When the Doctor manages to escape anyway, and then tries to track this person back to their source, they take the pragmatic approach and blow up the train. That person got away Scot-free and is still out there, and now knows how the Foretold worked and may have enough info to create their own version.
  • "Flatline":
    • They took the series' infamous dodgy CGI and weaponised it. That, and what seems like an innocuous piece of fancy artwork, that turns out to be somebody's nervous system torn out and displayed on the wall.
    • The walls and floor appearing to melt and distort, coming towards you, then painfully dragging you into the two-dimensional surface. Or murals that appear to be realistic paintings of people facing away... then they start turning around and melting towards you.
    • To make matters worse, the Boneless use the horrifically distorted image of their victims for their three-dimensional appearance. Their dead victims. And that includes the woman whose nervous system was spread out on the wall.
    • If you still can't comprehend the horror, here are some pictures and a GIF.
    • Missy seems to have chosen Clara for something, as indicated by her appearance and words in the end of the episode. Her entire demeanor in the scene is really unsettling. Even creepier is the fact she is in front of a door with a window that looks like a Cyberman's eye.

    Series 9
  • "The Zygon Invasion" features a lovely scene where a team of UNIT soldiers go to confront a group of Zygon's in an abandoned church. And what follows is an intense standoff between the soldiers and the Zygon's impersonating innocent hostages and their loved ones. The soldiers are manipulated by them and then led to their deaths. It just goes to show how effective and efficient the Zygon's are at manipulation and killing.
  • "The Zygon Inversion" features the lovely scene when Bonnie (who's pretty chilling in her own right) forcibly reverts a Zygon to his true form. The gradual, sporadic transformation is eerily reminiscent of Lampwick turning into a donkey in Pinocchio.
  • "Sleep No More":
    • Finding out that the Morpheus pods can hijack those who frequent them with an electronic signal that Rassmussen himself created. Even those who have used it once are in danger. "You've got something in your eye."
    • The Morpheus pods themselves can count on their own as well. They're named after the god of sleep and dreams, and they essentially take that away. It's a twisted moniker to name something after a god that was renowned for giving actual sleep and dreams, versus the machine that can simply rewrite your brain's chemistry and electrical stimuli from achieving proper sleep after only a few minutes, just so you can work longer than what should be natural for humans.
  • "Face the Raven":
    • The chronolock. It appears on your neck in such a way that you can never see it, and you constantly have to ask others how long you have left to live. Everyone else can see it, and they judge you for your crime, and lastly there is what happens when it hits zero.
    • You begin your day with an exhilarating adventure with your love, about whose safety and survival you've been increasingly worried about. The two of you are asked for help by a young father and after some investigation you easily deduce the origin of the problem. You also realize early on that it's a con game. Easy, peasy. Unknown to you, however, said love has gone rogue and decided to take the chronolock upon herself as strategy to keep the young father safe. You discover this too late, and there is nothing you can do but hug her, receive some words of encouragement from her ... and then watch her die, screaming in agony before being teleported god knows where without time to so much as grieve. Adult Fear to the max and not a very good way to end your day. (The Doctor, incidentally, directly identifies Clara's death as one of his nightmares in the following episode, "Heaven Sent".)
    • As explained under the "Doctor" folder, the Doctor's anger at Ashildr for indirectly being responsible for Clara's impending death. It's seldom a good thing when the Doctor gets angry at any other moment, but when he starts to threaten to bring UNIT and even the Daleks to the Trap Street to utterly annihilate everyone there — who are for the most part innocent refugees — as well as Ashildr, who didn't even intend for Clara to die and is screaming that he's "no longer the Doctor" and that no one's ever "stopped him" before, you know he's pissed off! Thankfully, Clara is able to eventually talk him down...
  • "Heaven Sent": The Doctor dragging himself, bleeding, up the stairs, while narrating about how long it take for Time Lords to die properly as every cell in their body tries and fails to regenerate.

    Series 10
  • "Smile":
    • Twelve smiling is unnerving to say the least.
    • The Vardy are normally robots that speak emoji, but when they go into kill mode, their faces, with the skull eyes and the skeletal teeth, are scary. Especially since that face brings back to mind the Vashta Nerada...
    • The Vardy manifest as a cloud of nano-bots that literally come out of the walls to attack anyone who is not smiling, and strip humans to the bone in seconds. Then they grind up the bones to use as fertiliser. The most worrying thing about this is they honestly think they are doing humans a favour by killing them!
  • "Thin Ice":
    • The villain of this episode is a rarity among Who villains. An ordinary human who does not care about how many people must be sacrificed for his own goals and is not even working with a sentient alien presence like most other human villains.
    • The final scene with Nardole at the Vault. At first he's just checking the locks as usual, muttering to himself about the Doctor breaking his "oath"...and then as he's walking away, whatever is on the other side starts knocking. Nardole realizes that whatever is inside has figured out that the Doctor is now distracted with a new companion, and it's "getting cocky". He angrily shouts at the thing that he's still not letting it out, but whatever it is, it keeps on knocking. In fact, it knocks four times. And just in case that's not enough of a subtle reference for you, there's a faint but clearly audible drumbeat in the soundtrack during the knocking.]
  • "Knock Knock":
    • The mere idea of a house that eats people.
    • Whenever the Landlord taps a wall with a tuning fork, you know that whoever sees him doing it is essentially screwed, as this quickly summons the Dryads to devour their victim.
  • "Oxygen":
    • The Doctor's disturbing and surprisingly accurate lecture on the effects of vacuum exposure.
    • 36 out of 40 workers on the space station have been killed by their own spacesuits, which are still mobile and carrying the corpses around with them!
    • Just imagine how scary it would be if the only thing keeping you alive could kill you at any moment. Then imagine that this can control your every move or paralyze you. Finally, imagine that it can malfunction.
      • When the Doctor first encounters one of the dead crew the audience is treated to a close-up of his glassy-eyed, pale and stiff face. The rest of the crew fare no better; some of the faces of the dead are seriously messed up.
      • Bill has it rough in this episode. First, as the crew prepare to go outside, her suit malfunctions and removes her helmet, exposing her to the vacuum of space! The scene is shot from her point of view as she passes out, and it's not pleasant. Later on her nervous system is hijacked, leaving her paralysed and forced to chase after the Doctor and Nardole to kill them. When she hugs them both at the end, you find yourself wanting to do the same.
      • After saving Bill from space without a space helmet, he goes blind. The Doctor. Is. Now. Blind.
      • It's not cured by the end. At the very end, the Doctor reveals he's STILL blind. Nardole points out how bad this is, as the prisoner in the vault might take advantage of this...
  • "The Pyramid at the End of the World":
    • The reason why the Prophets of Truth look like corpses. It acts as A Form You Are Comfortable With but to them, all humans are just corpses.
    • Speaking of the Monks, they are Reality Warpers. The good news is they need consent to use them; the bad news is they are very good at persuading people to give it to them, and if it is given for any reason other than pure and unconditional love, they will kill you.
    • The End of the World as We Know It the Monks have foreseen is not the result of World War III, an alien invasion or something the Monks have done which they will only prevent if humans surrender. It is the result of a series of actions, all happening on the same day, leading to the creation of a deadly strain of bacteria capable of destroying all life on Earth, followed by it getting accidentally released into the environment. The worst bit is such a thing could actually happen in real life.
  • "The Lie of the Land":
    • The Unsmile the Doctor makes in the intro is positively sinister.
    • Memory Police burst into a family's home and arrest someone for a thought crime. Imagine being that kid or the man and watching that happen. Nobody in the crowd except Bill cares.
    • Someone corrupting your memories sounds pretty horrific.
  • "World Enough and Time":
    • I. WAITED. FOR. YOU.
    • One of the partially-converted proto-Cybermen manages to activate its hospital bed's intercom, and is calling out its distress — "Pain... pain... pain... pain..." — over and over. When a nurse finally notices, she comes over and rectifies the problem ... by turning the intercom's volume control to zero.

    Series 11
  • "The Woman Who Fell to Earth":
    • The introduction of the tentacle-creature, writhing its way out of the darkness after blasting down the train carriage's doors. Then gliding along via Ceiling Cling and cornering its hapless target. An entity that doesn't even have recognizable eyes, let along anything remotely resembling a face, for the viewer to fix upon! In a way, it's as alien-looking an alien as we've seen on the show since the dream crabs from "Last Christmas".
    • "Tim Shaw" (the Monster of the Week) opening his helmet, revealing what became of the tooth he took from his victim: he absorbed it into his body, along with about fifty other teeth from previous kills.
      "A Stenza warrior wears his conquests."
    • At the episode's end, the Doctor attempts to teleport herself into the orbiting TARDIS using a jury-rigged device. It fails, leaving her adrift in the void of space, with no TARDIS in sight — along with the human companions who got snagged in the teleport.
    • For the first time, the Doctor describes just how painful it is to regenerate, shattering any illusions that Time Lord biology had any effect on the sensation of every cell in your body burning and then being reborn. She also outright says there's always a moment where you fully expect you're about to die for good.
    • The way Tzim-Sha dies is incredibly gruesome. He starts writhing and screaming in pain, and the last we see of him before he transports himself back home is the sight of his face melting off! Apparently those DNA-bombs were outlawed for a reason...
    • The crane scenes are premium nightmare fuel for anyone suffering from acrophobia (fear of heights). Ryan almost slips climbing a very high ladder, Karl is told to make a leap between two cranes (and we get some lovely close ups of just how far he could fall if it goes wrong). The Doctor ends up making said leap and only just manages to grab the opposite crane arm, spending several seconds holding on for dear life, and Grace dies falling off a high ladder after being electrocuted by the gathering coil.
  • "Rosa":
    • Just the thought that racism can still exist into the far future, far enough that a prisoner of Stormcage like Krasko could be so blatantly and openly racist, is a horrifying prospect. We know he was bad enough that they deliberately wired his brain so he couldn't kill anyone, and even that wasn't enough to stop him from trying to sabotage the Civil Rights movement from what would have been, from his perspective, centuries in the past.
    • The episode pulls no punches in portraying the horrific racism present in the American south of the 1950s, even specifically bringing up Emmet Till, the teenage black boy who was murdered after a white woman accused him of harassing her (and who recently admitted that she made it up). Ryan and Yaz are forced to walk on eggshells in a society just waiting for the opportunity to beat them up or kill them. It's especially nerve-wracking to watch if you happen to be a person of color yourself. Even at the episode's end the only satisfaction they get is that things have progressed to the still-unsatisfactory level of their own time and may one day reach true equality.
    • How does the Doctor confirm that Krasko has a Thou Shall Not Kill Restraining Bolt? She provokes him until he snaps and tries to throttle her. It's an uncomfortably nasty burst of up-close and personal violence.
    • On the Doctor's part, she seems to be having a little too much fun taunting Krasko and revels in the fact that he can't actually hurt her no matter what she does. She tells him about how she knows about his Restraining Bolt and rips off and stomps on his vortex manipulator with almost-maniacal glee. This is a little unsettling coming from the normally cheerful and sweet Thirteenth Doctor. Also counts as a Moment of Awesome because Krasko absolutely deserved every bit of that taunting.
  • "Arachnids in the UK":
  • "The Witchfinders":
    • The Morax King is a giant tendril of mud that moves in a very unsettling Uncanny Valley way, looking more like claymation than CGI.
    • The mud zombies are quite creepy, especially Willa's grandmother when she grabs an axe.
    • For the first time, the Doctor's new gender works against her, culminating in the village trying to drown her for being a witch, as such accusations can be easily thrown at her. She even complains to the effect that when she was a man she could just get on with things without having to defend herself. While she's able to escape no worse for wear, it's a stark reminder that she's not got the privilege to navigate most situations safely that she used to.
  • "It Takes You Away":
    • The Antizone. It's a dark, red-tinted Pocket Dimension populated by flesh-eating moths and a creepy humanoid named Ribbon.
    • The very concept of the Solitract. It's an Alternate Dimension that will destroy our universe if the two come in contact. It Can Think, and it wants to rejoin our universe. The fact that it's not actually malicious just makes it worse. Imagine destroying an entire universe just because you wanted a friend.
    • The Solitract constructs of Grace and Trine. They act friendly, but there's something very off about them. Especially when they shoot beams of light out of their hands and act as if nothing unusual is happening.
  • "The Battle of Ranskoor Av Kolos": Tzim-Sha (AKA Tim Shaw) is back.
    Tim Shaw: Paltraki. Do you remember me, Paltraki?
    The Doctor: I know that voice.
    Yaz: IS that...?
    Ryan: It can't be...
    Tim Shaw: [appears on the monitor] I want what is mine returned.
    Paltraki: And why would I do that?
    Tim Shaw: For your crew. Return what you took, or I will dismantle them piece by piece, beamed directly into your ship.
    Umsang: Paltraki, don't come back. Don't worry about us. You got what we came for.
    [Tim Shaw kills her]
    Tim Shaw: Two of your crew left. You have till lightfall.
  • "Resolution":
    • The Dalek(s) return in this episode. At first, the Kaled mutant is out of its shell, and it is even more threatening and menacing than ever before. The Kaled mutant can apparently take over a human's body with the use of mind control.
    • After the Reconnaissance Dalek creates its own special casing, we see how much carnage it can cause. Oh and to mention, this Dalek can fire rockets from its baubles, and lays waste to an army trying to attack the Dalek.

    Series 12 
  • "Spyfall":
    • The attacked spies had their DNA scrambled, effectively turning them into brain-dead Humanoid Abominations.
    • Pretty much everything about the Kasaavin. They appear less as physical entities and more like jagged, glowing holes in the universe... which, given their powers and their place of origin, may well be exactly what they are. The fact that we barely learn anything about what they really are or how the Master came in contact with them only makes it worse; all we know is that they plan on converting all of humanity into living hard drives and that they took their humanoid forms to mock humanity. Special note has to go to the scene outside O's shack, as the creatures are clearly toying with the soldiers guarding the Doctor and her allies.
    • The Reveal of "O"'s true identity: he's The Master, who ambushed the real O on his first day at work, shrunk him with a Tissue Compression Eliminator, and assumed his identity from there. He then transports the Doctor to the realm of the mysterious creatures and blows up the cockpit of the plane they're in, leaving Graham, Yaz, and Ryan to plummet to their deaths.
      • And after that reveal, O turns from a slightly giddy Doctor fanboy to a cold, calculating villain in seconds. The shift is downright disturbing!
        "O"/The Master: I told you to look for the spymaster, didn't I? Or should I say...the spy-Master?
    • The Master kills several innocent people at an invention fair, many without any pretext at all, and he toys with one poor woman, who has no idea who he is or what's going on, by demanding to know if she moved after he'd said not to, and after she insists frantically that she didn't, he sadistically gives her a Hope Spot by saying cheerfully that it was his mistake, only to spin on his heel and shrink her to death anyway. The Master has never cared much about human life, but as he tells the Doctor, he enjoys the feeling he gets when he kills someone.
    • For the first time, we finally see the Tissue Compression Eliminator in action... and it's terrifying for just how fast it is. There's no beam of light, no flash, one second a person is living and the next, they're a shrunken doll. To go from a living person to a corpse the Master shows off in his hands is jarring.
    • The shot of the destroyed citadel on Gallifrey, fire and smoke billowing all around and various structures nearly reduced to rubble. The Master later claims responsibility for this, which begs the question... what the hell did he do?
    • Then there's his motive for doing so: apparently he learned something so horrifying about the origins of Time Lord civilization — something that convinced him that everything he believed about Gallifrey's history was built on lies — that he felt that destroying the entire civilization was the only acceptable option. Considering that what we already know about the Time Lords is pretty damning on its own, the secret of the "Timeless Child" must be pretty damn horrific.
    • There were hints before of Thirteen's dark side in Series 11, but she shows it off in this episode, from the ferally joyful grin while the Master chokes her, to outright using his new ethnicity to get him captured by the Nazis.
  • "Orphan 55": The big reveal — Orphan 55 is a future Earth, made uninhabitable by climate change, pollution and nuclear war. The Dregs? They're the descendants of the last humans left on Earth.
  • "Nikola Tesla's Night of Terror":
  • "Fugitive of the Judoon": Prior to the reveal — and even after it, to an extent — Ruth's plight is absolutely horrifying. For as long as she can remember she's lived a normal life, and then in the space of a single day, aliens invade her town, her husband is murdered and turns out to have been an interstellar fugitive, and then she receives a text message which starts causing her to act in ways she herself doesn't understand, forcing her to question whether she even knows who she really is. In particular, the scene in the lighthouse when she sees the "Break Glass" button is chillingly reminiscent of Professor Yana becoming the Master… for fairly similar reasons, it turns out. Fortunately the person Ruth becomes is quite a bit more benevolent (though still with a decidedly Good Is Not Soft edge), but still...
    • Even if the Ruth!Doctor turns out to be the Big Good of the episode, her reveal is still freaky because it weaponizes how you'd do a traditional intro for a new Doctor. She has the confidence, an instantly iconic outfit, knows how to pilot the TARDIS...and all of it feels wrong because no one no one knows where this Doctor came from at all.
  • "Praxeus":
    • Praxeus' effect on humans: It causes these really horrible crystalline growths to spread all over their bodies and once the body is fully covered, they disintegrate. Not to mention what it does to the unlucky few it doesn't kill so quickly...
    • The look of sheer absolute panic on Suki's face as the Doctor explains that the cure she created — the cure that Suki just administered to herself — only works on humans. Cue Suki being rapidly consumed by Praxeus.
    • Of course, the fact that Suki's team was willing to use the entirety of Earth as a giant petri dish in the hopes of curing their own planet is pretty chilling on its own.
  • "The Haunting of Villa Diodati":
  • "The Timeless Children":
    • The Doctor finding out that she was experimented on as a child and used to make the Time Lords, including a flashback to herself (covered by a perception filter) having her memories removed by being strapped into some sort of machine and electrocuted.
    • The Master's sheer pettiness is kind of horrifying. He wiped out an entire species — his own species! — just because he couldn't stand the thought that the Doctor was better than him!
  • "Revolution Of The Daleks"
    • There's been a lot of "I am the Doctor!" moments in the show, but this time it's not a triumphant moment. The sickly green light and the Thousand-Yard Stare, complete with sneer, as she declares as she's the one who stops the Daleks.
    • During the climax, the Doctor tricks the Daleks into flying into the spare TARDIS she gained in the last episode, trapping them there. It proceeds to fold into itself and fly into the Void, where the Daleks will be erased from existence, just like she programmed it to. Remember, TARDISes are living, sentient creatures, so the Doctor basically sacrificed that one to save humanity, by sending it on a suicide mission.


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