History Recap / DoctorWhoS32E3TheCurseOfTheBlackSpot

* BlackSpot: Though not completely like the trope... the Siren leaves a black mark on the hands of those she "curses". Turns out it's a tissue sample, not a death note, and the "victims" are taken to the sick bay of a space craft, not killed.

** He also describes a multi-dimensional scenario to Amy in great detail, then tells her [[LiesToChildren it's something not much like that at all.]]
* EverybodyLives

* {{Flynning}}: Somewhat justified; Amy probably hasn't taken any sword-fighting classes recently, and it doesn't really matter, since the Siren will "curse" those with the smallest of cuts anyway.
* FullNameUltimatum: The Doctor towards Amy, though in a slight subversion. He doesn't use her full three names but rather calls her by her full first name, Amelia, and it's not an intentional ultimatum. "You only call me Amelia when you're worrying about me."
* GenreSavvy: The Doctor while walking the plank.

* HistoricalDomainCharacter: Captain Henry Avery. In reality, he did indeed serve with the Royal Navy, became a notorious pirate, before abruptly vanishing from the historical record in 1696. They even mention him stealing the treasure of the Mughal of India, a feat which made Avery the richest pirate in the world.
* IdiotBall: Not rescuing people from the Siren -- just watching them walk towards her in hypnotized fashion instead -- even though just dragging the person away worked well enough with Rory.
* ImplausibleFencingPowers: Amy is shown as being pretty deft with a sword, enough to hold off four dedicated pirates. Justified somewhat in that said pirates are actually more terrified of the Siren than her, as getting even so much as a nick puts you in her sights.
* MagicMirror: The Siren can emerge from any sufficiently reflective surface.
* MindScrew: Madame Kovarian shows up peeking through a non-existent window again.
* NauticalKnockout: This happens to Rory.

* PirateBooty: Justified, for once -- the historical Henry Avery really did capture a haul of gold and jewels (worth about US$400 million in modern money).
* PirateGirl: Amy
* {{Pirates}}: Set on a pirate ship.
* ProjectedMan: The Siren.

** Also, the "black spot" as a warning of imminent doom is a reference to ''Literature/TreasureIsland''.
** Combining the above two, the black spot may also be a reference to the spot Jack Sparrow gets on his hand in ''Film/PiratesOfTheCaribbeanDeadMansChest''.

* SirensAreMermaids: This is actually one of the least mermaid-like sirens around, although the Doctor calls it a mermaid in passing at one point.
* SneezeOfDoom: The Doctor's sneeze causes the Siren to notice him and come after him instead of Avery. Though it ends up being a subversion, as the Siren's reaction to his sneeze helps him to figure out her true nature as the ship's doctor.
* SpacePirates: What the crew becomes at the end.

* {{Technobabble}}: Subverted when The Doctor explains the TARDIS controls.

* {{Troperiffic}}: According to WordOfGod, you simply ''can't'' do a pirate story without using every single pirate trope there is, such as WalkThePlank, PirateGirl, PirateBooty and so on. Although, apparently [[TalkLikeAPirate no-one says "Yo-ho-ho" any more]].
* [[UniversalDriversLicense Universal Pilot's License]]: A particularly [[TVTropesWikiDrinkingGame egregious]] example where a captain from the age of sail goes on to pilot an alien vessel. It might be explained by the Doctor somehow implanting (off screen) enough knowledge to do so with the aid of the ship's automated systems, but it's still rather jarring.

* WhatHappenedToTheMouse: There were a quite a few pirates that just... vanish without explanation, such as the one Toby stabs. That particular pirate vanishing from a tiny locked room, no less. Though as all the pirates are on the spaceship at the end of the episode, he was presumably zapped away off-screen at some point.
* WorstAid: It's highly unlikely CPR alone would rescue somebody who almost drowned. On top of that, whatever Amy is doing doesn't even resemble proper CPR. And it was [[ArsonMurderAndJaywalking explained to her by a nurse!]]

The night is clear, the sea is calm, and one very nervous pirate, after slipping in the bilge water and cutting his finger, has a very black spot on his hand. His state of mind is not at all helped by being told by the captain himself that he's a dead man. And then the singing starts. A certain someone is on her way.

[=McGrath's=] not going down without a fight. He grabs a pistol and charges out on deck to try and escape, and the others take the precaution of locking the door behind him. There's a scream and then silence, and when the others come out onto the deck, there's no trace of [=McGrath=], just like all the others. This does nothing for the mental well-being of the remaining crew, though the captain holds hope that the wind will change and they'll be able to escape. Suddenly, there's a banging from below decks... It's the Doctor, Amy and Rory.

The Doctor is forced to walk the plank, with Rory getting a go next. Amy, as the "doxy", will be put to work below decks. Rory protests that Amy is not a doxy, which doesn't help much. Once the pirates are done LockingMacGyverInTheStoreCupboard, Amy of course immediately jumps back out again with a nice sword and a pirate captain outfit. Also, the Doctor has noticed that five pirates is a very small crew for such a large ship.

The pirates are rather reluctant to take Amy on. She manages to nick the hand of one of them. The wounded pirate realises that he's ''dead'' now. One cut is all that it takes, as the black spot appears on Amy's victim. Then Rory fumbles a sword catch and now he's got a mark too. And is apparently next on the menu for the demon that lurks in these waters. Poor guy just can't win.

A melodic voice pipes up again, which really doesn't help the situation. Avery says to stop up their ears to block out the Siren's hypnotic song. Before Rory can finish being dismissive of that last statement, he appears to fall under her spell. And... starts acting like he's high. According to Avery, this is normal for the Siren's victims.

Green and glowing and beautiful, the Siren makes quick work of the enthralled pirate, who vanishes in a cloud of... something. Now it's Rory's turn, and he seems to be quite looking forward to it, actually. Amy is ''not'', though, and makes it clear that Rory is taken already. The Siren responds by turning red and showing lots of teeth.

Once they're all "safely" in the hold, Amy proceeds to ask just what the hell that was. Apparently the Siren's been preying on these waters for years, and she's been picking off the wounded crew one by one, attracted to blood. Like a green singing shark in an evening gown. Once again the Doctor babbles, once again Avery pulls out the gun. One of the pirates gets bitten by a leech in the water, which causes a mass shuffle to dry ground.

The Siren gets into the hold anyway, and takes the leech victim. But hey, at least the Doctor [[RunningGag gains a nice hat]]. Once they're safer, the Doctor surmises that she's using water like a portal. Where on a ship in the middle of the ocean can you find somewhere with no water? The powder magazine. The Doctor tells Avery not to be threatened by the fact that he's [[NiceHat got a hat now]].

Amy sees the eye patch lady again, through a hatch in a wall. But there's no hatch in the wall.

When they get there, the key to the door is missing from its ring, and the door is already unlocked. Somebody else apparently had the same idea, and that somebody is currently hiding in a barrel.

The boy is in fact Avery's son, Toby, whose mother has died. He's under the impression that Avery is a celebrated naval officer, and he stowed away on the ship so he can join his fabled dad's crew. Which Avery isn't too happy about, to say the least. The boy also has a nasty cough and... the black spot. He doesn't have any cuts, though. The theory about the Siren being attracted to blood is out the window; instead she focuses on the wounded and sick. Humans being as weak and fragile as they are, it's only a matter of time before they all damage themselves in some way and become her prey. All the more reason to get out of here. The Doctor and Avery have another little test of wills. The gun comes out again. Toby, meanwhile, feels thirsty, and since there's a barrel of water, he lifts the lid to get a drink -- and the Siren's arm comes out. The Doctor forces the lid back down on it.

Back in the barricaded cabin, the remaining pirates aren't too keen on babysitting Toby, and make to leave with the ship's row boat. Toby isn't too happy about that, since they're disobeying their captain. The pirates rain on his parade and inform him exactly what Avery really does for a living. Poor Toby. Still, he's not about to let them leave, and unwittingly condemns one of them when he slices his hand with a sword. His friend promptly takes the keys and makes off, and much as the afflicted man would like to shoot Toby, he really can't, since they're in a powder room and all. All they can do is re-barricade the door.

Back on the TARDIS there are some navigational problems, as the ship can't lock onto the plane they're currently in for some reason. The ocean's involved in some way. And then the TARDIS apparently starts having a tantrum, everything's acting up, and she's about to de-materialise. "ABANDON SHIP!"

[[OhCrap The TARDIS is gone.]]

On their way back to the others, they're waylaid by Mulligan. Complete with guns. It's a mutiny. He's got the last of the supplies, but Avery's more concerned about his treasure. A chase ensues, ending with Mulligan locked in a little room, lighting a candle -- and burning his fingers. The Siren's song starts, but she's not here for the two outside the room. The problem is, since there's no water in there, how did she get in?

The answer is, quite literally, in Avery's hands. Reflections are the gateway, not just water. And where does one find lots of reflections but in the polished metal of a treasure horde. And in a shiny medallion Avery left around his son's neck.

For a change, they get there in time and the Doctor fogs up the medallion with some heavy breathing. Now they've got to get rid of all the reflections. And that means dumping all this treasure in the sea. Avery isn't too happy about that, but for Toby's sake agrees. And now they play the waiting game, until the sea roughens up again.

The Doctor and Avery, though, can go up on deck, and they do so and have a chat about things like travelling and companions and how Avery doesn't think he's a good father and can't go back to what he was before. Cheerful stuff. The Doctor is a healthy proponent of the belief that everything can change.

The night wears on, and the Doctor gets the distinct impression that someone's watching him. But then a thunderstorm starts. Time to man the sails, which is pretty hard considering how few of them there are. It turns out that Avery didn't throw out all of the treasure, though, since there is one crown left and thus a way for the Siren to get through. And get through she does, and takes Toby before the Doctor can chuck the thing overboard. Once he does, he's none too pleased with Avery. How much does that treasure mean to him, that he could let it destroy his life so? His rant gets cut off, though, when Rory falls overboard. Guy just can't get a break.

They wake up on the bridge of an alien ship. Basically, the pirate ship and the alien ship exist on the same plane, but in two different universes, and all the reflective surfaces are where the barrier between the worlds is thin enough to slip through. And [[EverybodyLives everyone who "died" is lying in the sickbay]]. The Siren is a medical hologram left on autopilot; the black spots are tissue samples. However, since he is dying anyway, letting Toby escape would only harm him.

Rory would also drown if removed from the machine. However, he gives Amy instructions on how to [[CPRCleanPrettyReliable perform CPR]], and agrees to let them drag him to the TARDIS and revive him again. Our heroes leave the alien ship in the hands of the pirates, where Toby, hooked up to the machine forever, can travel the stars with them.

Back on the TARDIS, Schrödinger's Pregnancy still seems to be going on, and the Doctor is ''very'' worried. He keeps it a secret from the others. Amy and Rory continue to angst about the Doctor's impending death.

* ActionGirl: Amy

* ArtisticLicenseBiology: The Doctor refers to whatever contagion killed the spaceship's crew as bacteria and a virus in the same sentence. Of course, he doesn't exactly know ''what'' it was, so we can forgive him for just blindly guessing.

* {{Autodoc}}: The Siren turns out to be one.
* BadassBeard: The pirates. Rory, while stupefied by the Siren, says he wants to grow his own beard.
* BadassLongcoat: Amy acquires one early in the episode.
* BlackDudeDiesFirst: The only black crew member is the Siren's first on-screen victim. Though it's later revealed that the victims aren't actually ''killed'' by the Siren.

* ChekhovsSkill: A ship is a ship.
* ColourCodedForYourConvenience: The Siren. Green means everything's fine, nothing to worry about. [[TurnsRed Red means be very afraid.]] Or be more hygienic.
* CompensatingForSomething: The pirate's guns, according to the Doctor.
* CompletelyMissingThePoint: Despite the fact there is no possible way to do so given the situation, [[{{Cloudcuckoolander}} the Doctor]] is less concerned about walking the plank and more concerned that the pirates aren't doing enough evil laughing as he walks the plank.

* CPRCleanPrettyReliable: Used to save Rory's life after he's removed from the sick bay. Rory, who was otherwise occupied and unable to assist the patient himself, said he would talk Amy through it before and pointed out that she's seen [=CPR=] performed in films. Worst nurse ever, or GenreSavvy?
* DisneyDeath: Rory

The TARDIS is marooned on-board a 17th-century pirate ship, whose crew is being attacked by a shiny green LilyCole.

* NightmareFace: LilyCole, playing the Siren, is a perfectly attractive young lady, but when said Siren gets angry? Not so much.

* HistoricalDomainCharacter: Captain Henry Avery. In reality, he did indeed serve with the Royal Navy, became a notorious pirate, before abruptly vanishing from the historical record in 1696.

The TARDIS is gone.

->''"[[TalkLikeAPirate Yo-ho-ho!]]...[[SubvertedTrope Or does nobody actually say that?]]"''

* ArtisticLicenseLinguistics: At one point, a pirate says that he's not going to mollycoddle the boy. Thing is, the word "mollycoddle" wasn't around in this timeperiod.

:: Turns out later that what he detected was one of the portals between the pirate ship and the alien ship.

* CallBack: Near the start of the episode, the Doctor asks Amy what she thinks she is doing and she replies "Saving your life". This may be a call back to "The Impossible Astronaut".

'''WARNING! THERE MAY BE UNMARKED SPOILERS!'''

->'''Doctor:''' ''[[TalkLikeAPirate Yo-ho-ho!]]...[[SubvertedTrope Or does nobody actually say that?]]''

-> Written by Steve Thompson

!!Tropes
* ActionGirl: Amy.

* BlackDudeDiesFirst: The only black crew member is the Siren's first on-screen victim.
** Though it's later revealed that the victims aren't actually ''killed'' by the Siren.
* BlackSpot: Though not completely like the trope... the Siren leaves a black mark on the hands of those she 'curses'. Turns out it's a tissue sample, not a death note, and the "victims" are taken to the sick bay of a space craft, not killed.

* CallBack:
** This isn't the first time that [[Recap/DoctorWhoNSS1E9TheEmptyChild malfunctioning alien medical technology]] has caused problems.
** This isn't the first time that [[Recap/DoctorWhoNSS1E12BadWolf people who were apparently being disintegrated -- including a companion -- were actually being teleported to the threat-of-the-week's ship]].
** This isn't the first time that the solution has involved [[Recap/DoctorWhoS16E3TheStonesOfBlood being transported to a spaceship that's in the same place but another dimension]].
** This isn't the first time [[Recap/DoctorWhoS4E1TheSmugglers a pirate called Avery has been mentioned.]]
** [[Recap/DoctorWhoS31E05FleshAndStone Comfy sofa!]]
** Near the start of the episode, the Doctor asks Amy what she thinks she is doing and she replies "Saving your life". This may be a {{Call Back}} to "The Impossible Astronaut".

* CompletelyMissingThePoint: Despite the fact there is no possible way to do so given the situation, [[CloudCuckoolander the Doctor]] is less concerned about walking the plank and more concerned that the pirates aren't doing enough evil laughing as he walks the plank.

* {{Dissimile}}: According to the Doctor, the Siren is like a shark, in a dress, and singing, and green; a green singing shark in an evening gown.

--> '''The Doctor''': "Feels like something's out there...staring straight at me."
** Turns out later that what he detected was one of the portals between the pirate ship and the alien ship.
* {{Flynning}}: Somewhat justified, Amy probably hasn't taken any sword-fighting classes recently, and it doesn't really matter, since the Siren will 'curse' those with the smallest of cuts anyway.

* GoodThingYouCanHeal: Inverted. Instead of being incredibly accident-prone because they have super healing powers, they become incredibly accident-prone because they have, in essence, super dying powers (or at least they think they do, they believe that any small cut kills them).

* IdiotBall: Not rescuing people from the Siren - just watching them walk towards her in hypnotized fashion instead - even though just dragging the person away worked well enough with Rory.

* NiceHat: The Doctor continues his RunningGag of picking up hats. This time, it's a tricorn pirate hat.
** Amy and Captain Avery also get them.

* PirateGirl: Amy.

* PregnantBadass: Amy.

* RunningGag: The Doctor is once more enthused by the prospect of a new hat.

--> '''The Doctor''': "Ignore all my previous theories!"

** The title is one to ''Film/PiratesOfTheCaribbean: The Curse of the Black Pearl'', while the Siren is similar to the mermaids from ''On Stranger Tides''. There are also several POTC shout-outs in the incidental music, particularly when the pirates are sailing off into the distance at the end.
** Also, the "black spot" as a warning of imminent doom is a reference to ''TreasureIsland''.
** Combining the above two, the black spot may also be a reference to the spot Jack Sparrow gets on his hand in ''PiratesOfTheCaribbean: Dead Man's Chest''.
** The story line of a son refusing to believe that his missing father was in fact a pirate and not a law-abiding man recalls Will Turner and his father Bootstrap Bill from POTC.
** about an alien crew being killed off by human diseases may or may not be one to Literature/TheWarOfTheWorlds.

* {{Troperiffic}}: According to WordOfGod, you simply ''can't'' do a pirate story without using every single pirate trope there is, such as WalkThePlank, PirateGirl, PirateBooty and so on.
** Although, apparently [[TalkLikeAPirate no-one says "Yo-ho-ho" any more]].

* WhatHappenedToTheMouse: There were a quite a few pirates that just... vanish without explanation, such as the one Toby stabs.
** That particular pirate vanishing from a tiny locked room, no less. Though as all the pirates are on the spaceship at the end of the episode, he was presumably zapped away off-screen at some point.

-----

Captain Avery is understandably sceptical that the TARDIS crew picked up a distress call from them, since the pirates sent no signal and none of them has the faintest idea what a "sensor" is. Avery quickly gets fed up of all the Doctor's technobabble in trying to explain how the three got there in a blue box. Instead, he and pulls a gun on them. He settles on the more simple solution -- they're stowaways. What shall we do with them?

* IdiotBall: Not rescuing people from the Siren when just dragging them away worked well enough with Rory.

* ArtisticLicenseLingustics: At one point, a pirate says that he's not going to mollycoddle the boy. Thing is, the word "mollycoddle" wasn't around in this timeperiod.

* ArtisticLicenseBiology: The Doctor refers to whatever contagion killed the spaceship's crew as bacteria and a virus in the same sentence.
** Of course, he doesn't exactly know ''what'' it was, so can forgive him for just blindly guessing.

* PirateBooty: Justified, for once -- the historical Henry Every really did capture a haul of gold and jewels (worth about US$400 million in modern money).

Back on the TARDIS, Schrödinger's Pregnancy still seems to be going on, and the Doctor is ''very'' worried. He keeps it a secret from the others. Amy and Rory continue to angst about [[spoiler:the Doctor's impending death]].

** [[spoiler: PregnantBadass.]]

* {{Autodoc}}: [[spoiler: The Siren turns out to be one.]]

** [[spoiler: Though it's later revealed that the victims aren't actually ''killed'' by the Siren.]]
* BlackSpot: Though not completely like the trope... the Siren leaves a black mark on the hands of those she 'curses'. [[spoiler: Turns out it's a tissue sample, not a death note, and the "victims" are taken to the sick bay of a space craft, not killed]].

** This isn't the first time that [[spoiler: [[Recap/DoctorWhoNSS1E9TheEmptyChild malfunctioning alien medical technology]]]] has caused problems.
** This isn't the first time that [[spoiler:[[Recap/DoctorWhoNSS1E12BadWolf people who were apparently being disintegrated -- including a companion -- were actually being teleported to the threat-of-the-week's ship]]]].
** This isn't the first time that the solution has involved [[spoiler:[[Recap/DoctorWhoS16E3TheStonesOfBlood being transported to a spaceship that's in the same place but another dimension]]]].

** Near the start of the episode, the Doctor asks Amy what she thinks she is doing and she replies "Saving your life". This may be a {{Call Back}} to The Impossible Astronaut.

* ColourCodedForYourConvenience: The Siren. Green means everything's fine, nothing to worry about. [[TurnsRed Red means be very afraid.]] [[spoiler: Or be more hygienic.]]

* CoolOldGuy: Avery. He even takes [[spoiler: the TARDIS and space-time travel]] in stride.
* CPRCleanPrettyReliable: [[spoiler:Used to save Rory's life after he's removed from the sick bay]]. Rory, who was otherwise occupied and unable to assist the patient himself, said he would talk Amy through it before and pointed out that she's seen [=CPR=] performed in films. Worst nurse ever, or GenreSavvy?
* DisneyDeath: [[spoiler:Rory]]
** Considering who it is, does this ''need'' to be spoiler-tagged?

* [[spoiler:EverybodyLives]]

** Turns out later that what he detected [[spoiler: was one of the portals between the pirate ship and the alien ship.]]
* {{Flynning}}: Somewhat justified, Amy probably hasn't taken any sword-fighting classes recently, and [[spoiler: it doesn't really matter, since the Siren will 'curse' those with the smallest of cuts anyway.]]
* FridgeBrilliance: [[spoiler: Of course the Siren would rescue anyone with a cut on their hands. Odds are, they could have been infected with tetanus!]]
** You're forgetting how the Doctor decided to let a bunch of notorious pirates have access to a space-ship to joyride around the universe willy-nilly! However, given how the Doctor later summons them to take part at the battle of "Demons Run", he's apparently been keeping an eye on them.
* FreudWasRight: The Doctor: "And the guns, you're big on the guns aren't you? Freud would say you're [[CompensatingForSomething compensating]]."

* ImplausibleFencingPowers: Amy is shown as being pretty deft with a sword, enough to hold off four dedicated pirates. [[spoiler: Justified somewhat in that said pirates are actually more terrified of the Siren than her, as getting even so much as a nick puts you in her sights]].
* InfantImmortality: See below.

* MindScrew: [[spoiler:Madame Kovarian]] shows up peeking through a non-existent window again.

* NightmareRetardant: Just like a shark. In a dress. And singing. And green! A green singing shark in an evening gown.

** PirateBooty: Justified, for once -- the historical Henry Every really did capture a haul of gold and jewels (worth about US$400 million in modern money).
** PirateGirl: Amy.
* ProjectedMan: [[spoiler:The Siren.]]

** The title is one to ''PiratesOfTheCaribbean: The Curse of The Black Pearl'', while the Siren is similar to the mermaids that will appear in ''On Stranger Tides''. There are also several POTC shout-outs in the incidental music, particularly when [[spoiler:the pirates are sailing off into the distance at the end]].
** Also, the "black spot" as a warning of imminent doom is a reference to TreasureIsland.

** [[spoiler: The reveal about an alien crew being killed off by human diseases may or may not be one to Literature/TheWarOfTheWorlds.]]
** [[spoiler:The Siren]] is a virtual doctor similar to the EMH in ''Franchise/StarTrek: [[Series/StarTrekVoyager Voyager]]''.

* SneezeOfDoom: The Doctor's sneeze causes the Siren to notice him and come after him instead of Avery. [[spoiler: Though it ends up being a subversion, as the Siren's reaction to his sneeze helps him to figure out her true nature as the ship's doctor.]]
* SpacePirates: [[spoiler: What the crew becomes at the end.]]

** It might also be partially the Doctor doing a ContinuityNod to [[Recap/DoctorWhoNSS2E2ToothAndClaw a certain werewolf]].

** Considering the scene where the captain was able to figure out the basics of how to pilot the TARDIS with just a glance, the audience is probably just supposed to take it that he's just that good a captain.
** He figured out what a few of the instruments do. That's nothing like knowing how to pilot something -- just because someone can spot and know what the wheel, compass and gyroscope of a plane do doesn't make him a qualified pilot.
** However, it is both lampshaded and handwaved that he's right about what those instruments ''are'', but it's not exactly what they ''do'';
--> '''Avery''': *''Shrugs''* A ship's a ship...

** That particular pirate vanishing from a tiny locked room, no less. [[spoiler: Though as all the pirates are on the spaceship at the end of the episode, he was presumably zapped away off-screen at some point]].
* WorstAid: See CPR. It's highly unlikely CPR alone would rescue somebody who almost drowned. On top of that, whatever Amy is doing doesn't even resemble proper CPR. And it was [[ArsonMurderAndJaywalking explained to her by a nurse!]]

Back on the TARDIS, Schroedinger's Pregnancy still seems to be going on, and the Doctor is ''very'' worried. He keeps it a secret from the others. Amy and Rory continue to angst about [[spoiler:the Doctor's impending death]].

* BreatherEpisode: After duo beginning the new series, and before the NightmareFuel that follows.

** [[spoiler: The reveal about an alien crew being killed off by human diseases may or may not be one to TheWarOfTheWorlds.]]

* TedBaxter: Amy's convinced she was a great pirate, despite the fact she was only a threat because a slight scratch would send the Siren after someone. She also gets pissed off when a hypnotised Rory says the Siren is the most beautiful thing he's ever seen.

The night is clear, the sea is calm, and one very nervous pirate, after slipping in the bilge water and cutting his finger, has a very black spot on his hand. His state of mind is not at all helped by being told that he's a dead man by the captain himself. And then the singing starts. A certain someone is on her way.

Captain Avery is understandably skeptical that the TARDIS crew picked up a distress call from them, since the pirates sent no signal and none of them has the faintest idea what a "sensor" is. Avery quickly gets fed up of all the Doctor's technobabble in trying to explain how the three got there in a blue box. Instead, he and pulls a gun on them. He settles on the more simple solution -- they're stowaways. What shall we do with them?

The pirates are rather reluctant to take Amy on. She manages to nick the hand of one of them. The wounded pirate realises that he's ''dead'' now. One cut is all that it takes, as the black spot appears on Amy's victim. Then Rory fumbles a sword catch and now he's got a spot too. And is apparently next on the menu for the demon that lurks in these waters. Poor guy just can't win.

A melodic voice pipes up again, which really doesn't help the situation. Avery says to stop their ears to block out the Siren's hypnotic song. Before Rory can finish being dismissive of that last statement, he appears to fall under her spell. And... starts acting like he's high. According to Avery, this is normal for the Siren's victims.

Once they're all "safely" in the hold, Amy proceeds to ask just what the hell that was. Apparently the Siren's been preying on these waters for years, and she's been picking off the wounded crew one by one, attracted to blood. Like a green singing shark in an evening gown. Once again, the Doctor babbles, once again Avery pulls out the gun. Freud would have something to say about that, if he'd been born yet. One of the pirates gets bitten by a leech in the water, which causes a mass shuffle to dry ground.

The boy is in fact Avery's son, Toby, whose mother had died. He's under the impression that Avery is a celebrated naval officer, and he stowed away on the ship so he can join his fabled dad's crew. Which Avery isn't too happy about, to say the least. The boy also has a nasty cough and... the black spot. He doesn't have any cuts, though. The theory about the Siren being attracted to blood is out the window; instead she focuses on the wounded and sick. Humans being as weak and fragile as they are, it's only a matter of time before they all damage themselves in some way and become the Siren's prey. All the more reason to get out of here. The Doctor and Avery have another little test of wills. The gun comes out again. Toby, meanwhile, feels thirsty, and since there's a barrel of water, he lifts the lid to get a drink -- and the Siren's arm comes out. The Doctor forces the lid back down on it.

Back in the barricaded cabin, the remaining pirates aren't too keen on babysitting Toby, and make to leave with the ship's row boat. Toby isn't too happy about that, since they're disobeying their Captain. The pirates rain on his parade and inform him exactly what Avery really does for a living. Poor Toby. Still, he's not about to let them leave, and unwittingly condemns one of them when he slices his hand with a sword. His friend promptly takes the keys and makes off, and much as the afflicted man would like to shoot Toby, he really can't, since they're in a powder magazine and all. All they can do is re-barricade the door.

Back on the TARDIS, there are some navigational problems, as the ship can't lock onto the plane they're currently in for some reason. The ocean's involved in some way. And then the TARDIS apparently starts having a tantrum, everything's acting up, and she's about to demateralise. It would probably be good to get out, otherwise who knows where we'll end up. "ABANDON SHIP!"

The night wears on, and the Doctor gets the distinct impression that someone's watching him. But then a thunderstorm starts. Time to man the sails, which is pretty hard considering how few of them there are. It turns out that Avery didn't throw out all of the treasure, though, since there is one crown left and thus a way for the Siren to get through. And get through she does, and takes Toby before the Doctor can chuck the thing overboard. Once he does, he's none too pleased with Avery. How much does that treasure mean to him, that he could let it destroy his life so? His rant gets cut off, though, when Rory falls overboard.

Guy just can't get a break.

They wake up on the bridge of an alien ship. Basically, the pirate ship and the alien ship exist on the same plane, but in two different universes, and all the reflective surfaces are where the barrier between the worlds is thin enough to slip through. And [[EverybodyLives everyone that "died" is lying in the sickbay]]. The Siren is a medical hologram left on autopilot, the black spots are tissue samples. However, since Toby is dying anyway, letting him escape would only harm him.

* BlackSpot: Though not completely like the trope...the Siren leaves a black spot on the hands of those she 'curses'. [[spoiler: Turns out it's a tissue sample, not a death note, and the "victims" are brought to the sick bay of a space craft, not killed]].

** Near the start of the episode, the Doctor asks Amy what she thinks she is doing and she replies "Saving your life." This may be a {{Call Back}} to The Impossible Astronaut.

* CPRCleanPrettyReliable: [[spoiler:Used to save Rory's life after he's removed from the sick bay]]. Rory, who was otherwise occupied and unable to assist the patient himself, even told Amy that she knows [=CPR=] based on what she'd seen in the movies. Worst nurse ever, or GenreSavvy?

* {{Dissimile}}: According to the Doctor, the Siren is like a shark, in a dress, and singing, and green, a green singing shark in an evening gown.
** He also describes a multidimensional scenario to Amy in great detail, then tells her [[LiesToChildren it's something not much like that at all.]]

* FridgeBrilliance: [[spoiler: Of course the Siren would rescue anyone with a cut on their hands. Odds are, they were infected with tetanus!]]
* FridgeHorror: Something about a group of Pirates being stuck on a space ship with no women and only a boy for company creeps me out a little.

* ImplausibleFencingPowers: Amy is shown as being pretty deft with a sword, enough to hold off 4 dedicated pirates. [[spoiler: Justified somewhat in that said pirates are actually more terrified of the Siren than her, as getting even so much as a nick puts you in her sights]].

* MindScrew: [[spoiler:Madame Kovarian]] shows up peeking through a nonexistent window again.

* NightmareFace: LilyCole playing the Siren is a perfectly attractive young lady, but when said Siren gets pissed? Not so much.

** PirateGirl: Amy

* TemptingFate: "No curse is getting through three solid inches of timber". No points on guessing what happens next.

** Considering the scene where the Captain was able to figure out the basics of how to pilot the TARDIS with just a glance, the audience is probably just supposed to take it that he's just that good a Captain.
** He figured out what a few of the instruments do. That's nothing like knowing how to pilot something -- just because someone can spot and know what the wheel, compass, and gyroscope of a plane do doesn't make him a qualified pilot.