History NightmareFuel / HarryPotterAndTheDeathlyHallows

* Voldemort's full blown AxCrazy VillainousBreakdown reaction when he realizes Harry knows about Horcruxes.

** When Cadmus hangs himself to be with the girl he loves in death, the walls of his home unfold like a dollhouse, followed by a monstrous-sized Death appearing and lifting Cadmus' corpse up by the rope he hung himself with.

** Fiendfyre itself sounds like something straight out of a nightmare. It actively pursues living things, and it cannot be extinguished by normal means. If someone is faced with out-of-control Fiendfyre, their only options are to RunOrDie.

* Neville offhandedly mentions that the Hogwarts' Dark Arts classes post-takeover have involved practicing the Cruciatus Curse on '''first-years'''. You know, the curse that [[AgonyBeam inflicts horrible, unimaginable, incomprehensible pain]]? You know, the curse that ''drove Neville's parents insane?'' It's the definition of FridgeHorror.

** In the film, you can see the reaction of the Trio, hiding outside the boathouse, as it happens. Harry '''hates''' Snape at this point, and even he's horrified as he listens to Nagini attacking him.
** Also bear in mind that, in the books, it happens in the Shrieking Shack. The place of his humiliation and bitter memories. For Snape being at death's door, it must have been terrifying with triggers to the time what he nearly got eaten by Wolf!Remus in the same place.
* Whilst explaining to the Dursleys why they should evacuate, Harry tells Vernon that if they stay at Privet Drive, they’ll think Harry will come an rescue them. Emphasis on the word ‘think’. Both Harry and Vernon are not sure wether Harry would actually try and save HIS OWN FAMILY after the way they’ve treated him.
* A trio of wayward young men did a ''certain something'' to Ariana, an unsupervised 6-year old, that permanently drove her insane AND turned her into an Obscurial. Given that this is technically a family book, it's [[NothingIsScarier all but stated]] that they '''''raped her.''''' No wonder Percieval Dumbledore went PapaWolf on the boys and attacked them.

** NightmareRetardant of course when you realise he deserved it. Though, as pointed out on other NightmareFuel pages, that fact that he ''does'' deserve this can make it all the more chilling for some.

* The Ministry rounding up Muggle-borns, even the ''children''. And it's implied that a lot of them (yes, even kids) are given to the Dementors....

** For Xenophilius, the whole situation is nightmarish. Short story: the Death Eaters kidnapped his daughter because he publicy supported Harry, and he ''isn't even sure if Luna is still alive''. While Ron is initially angry at him for his betrayal, neither Harry nor Hermione blame him for that, as they understand that it was the actions of a desperate father.

** It's even worse as you see Draco Malfoy and some of his cronies/fellow students attending the event in the movie. All of them look terrified, one of them silently breaks down crying after Voldemort kills the teacher, and arguably for good reason; all of them (arguably) knew her or even were students of her class; and [[TearJerker they watched one of their own teachers die without being in a position to save her (at least, not at their cost of their own lives).

* When Harry and Hermione infiltrate the Ministry of Magic, they see that the Fountain of Magical Brethren statue has been replaced by a statue of a handsome wizard and witch sitting on grand thrones. Thrones that are made up of the bodies of hundreds of naked Muggle men, women and children, all with stupid and ugly faces, and with the inscription "Magic Is Might" at the base of the statue. The possibility exists...are the people being crushed underfoot a depiction or '''real''' Muggles TakenForGranite? Or worse, put into an AndIMustScream situation?

* The scene with the locket Horcrux trying to turn Ron against Harry in a last-ditch effort to defend itself. Harry says "Open" in Parseltongue in order to get the locket open, and Ron is ready to stab it with the Sword of Gryffindor, but ghastly spectres of Harry and Hermione emerge from the locket, only to tell Ron that he's worthless compared to Harry, and that Hermione will never choose him. Then the spectres of Harry and [[LoveInterest Hermione]] start kissing, showing Ron his worst fear. In the film, in addition to all that, when the locket opens, a ''[[EldritchAbomination swirling cloud of darkness]]'' '''[[JumpScare explodes]]''' ''out of the locket with enough force to knock the boys off their feet''. Swirling, ''talking'', constantly having things thrusting out of it, then disappearing before you can seem them properly, all while a high-pitched whirling is playing; the thing was freaky as hell. Also scary is Creator/EmmaWatson and Creator/DanielRadcliffe's perfect delivery of the lines mocking Ron, and Creator/RupertGrint's pained and horrified face as he looks to the two of them making out half-naked.

* Voldemort's (movie) death is... very graphic. He starts ''[[CruelAndUnusualDeath dissolving]]'' into paper like shreds, with a truly horrifying, [[DespairEventHorizon despair-filled]] look on his face, until there is literally nothing left of him.

* Not long before this, when Harry pulls a TakingYouWithMe on Voldemort, the violent and frightening way the two of them fight through Hogwarts while Apparating is only made more disturbing when the two of them [[RuleOfSymbolism briefly fuse]] [[{{Foil}} into]] [[EvilCounterpart one]] [[ShadowArchetype image]]. And the fact they were ''groaning, grunting and'' '''screaming''' throughout that whole fight. You could only start breathing again after they separated.

* Finding out you're a living Horcrux, and have had a part of one of the most foul evildoers of the age attached to you.

* The battle in the sky during "the seven Potters" shown in film, before Harry realizes what it is, it looks like a ''thunderstorm'' next thing you know there seems to be ''dozens'' of people in the air, firing spells, and remember only 14 are established to be Order members, that means, that the rest are ''all probably Death Eaters'', a huge reminder that, in contrast to the previous films, the wizarding world is in open war.
* Remember in ''Chamber of Secrets'' when Ron said "If we hadn’t married Muggles, we'd've died out."? Well, had Voldemort actually succeeded, he would have probably installed anti-miscegenation laws between muggles and wizards and this would have most likely doomed the entire Wizarding race to extinction.
** Alternately, it's also stated that a lot of Pureblood families resort to [[KissingCousins various levels of incest]] to keep their lines "clean." So the Wizarding world might not be at immediate risk of extinction, at least for another few generations... But it's still rather horrifying/squicky to think that even more Wizards would've had to resort to incest to survive.

** Fiendfyre itself sounds like something straight out of a nightmare. It cannot be extinguished by normal means, and it actively pursues living things. If someone is faced with out-of-control Fiendfyre, their only options are to RunOrDie.

This is Harry Potter's darkest hour, and his final showdown with his mortal enemy draws closer. The final chapter in the saga holds no punches in demonstrating the horrors of the second wizarding war.

* Crabbe using the Fiendfyre curse in the Room of Requirement. The entire room was engulfed in powerful flames that were uncontrollable, transforming itself into large animals spreading across. While the trio, Malfoy and Goyle managed to escape it, [[KarmicHoudini Crabbe himself was killed in the fire]] to the shock of Draco.

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/3ef9345001cd8* Whilst explaining to the Dursleys why they should evacuate, Harry tells Vernon that if they stay at Privet Drive, they’ll think Harry will come an rescue them. Emphasis on the word ‘think’. Both Harry and Vernon are not sure wether Harry would actually try and save HIS OWN FAMILY after the way they’ve treated him. 5f30f1cb2f9dc90f7be_600x400.jpg]]

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/3ef9345001cd85f30f1cb2f9dc90f7be_600x400.jpg]]

* Whilst explaining to the Dursleys why they should evacuate, Harry tells Vernon that if they stay at Privet Drive, they’ll think Harry will come an rescue them. Emphasis on the word ‘think’. Both Harry and Vernon are not sure wether Harry would actually try and save HIS OWN FAMILY after the way they’ve treated him. Thankfully the Dursleys decide to evacuate and are kept in a safe house for the rest of the book.

** It's even worse as you see Draco Malfoy and some of his cronies/fellow students attending the event in the movie. All of them look terrified, one of them silently breaks down crying after Voldemort kills the teacher, and arguably for good reason; all of them (arguably) knew her or even were students of her class; and [[TearJerker they watched one of their own teachers die without being in a position to save her (at least, not at their cost of their own lives). Seeing how they were allied with Voldemort and his cronies and helped them get inside the school,]] [[ItsAllMyFault they probably would also feel (partially) responsible]] [[ILetGwenStacyDie for her death in the first place]], [[MyGreatestFailure and they are likely to live with that fact]] [[AndIMustScream for the rest of their lives]].

* Remember in ''Chamber of Secrets'' when Ron said "If we hadn’t married Muggles, we'd've died out."? Well, had Voldemort actually succeeded, he would have probably doomed the entire Wizarding race to extinction.

* A trio of wayward young men did a ''certain something'' to Ariana, an unsupervised 6-year old, that permanently drove her insane AND turned her into an Obscurial. Given that this is technically a family book, it's [[NothingIsScarier all but stated]] that they '''''raped her.'''''