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* FantasticTimeManagement: Hermione Granger uses daily time travel to take more classes than would be otherwise possible.

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* FantasticTimeManagement: Hermione [[spoiler:Hermione Granger uses daily time travel to take more classes than would be otherwise possible.]]
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Way to completely spoil your own spoiler.


* ExtremeMeleeRevenge: When Harry first meets [[spoiler:Sirius]]. Harry becomes so enraged that he forgets all about magic, forgets that Sirius is supposedly a powerful dark wizard trained by Voldemort himself, and forgets that Sirius is holding three wands. Harry charges Sirius down and nearly suffocates him.

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* ExtremeMeleeRevenge: When Harry first meets [[spoiler:Sirius]]. Sirius, Harry becomes so enraged that he forgets all about magic, forgets that Sirius is supposedly [[spoiler:supposedly]] a powerful dark wizard trained by Voldemort himself, and forgets that Sirius is holding three wands. Harry charges Sirius down and nearly suffocates him.
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* AntagonistTitle: Subverted. Sirius turns out to be a good guy.

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* AntagonistTitle: Subverted.[[spoiler:Subverted. Sirius turns out to be a good guy.]]
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* ShoutOut: "Cockroach cluster" originally comes from a Monty Python sketch.
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(Somehow I got cutoff) It is a videogame trope about gl.itches rendering the game unplayable.
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Removing misuse. It is a video game trope.


* GameBreakingBug: The time-turner has the potential to be this for the entire series; much like the infamous ''The Lord of the Rings'' "why didn't they just use the eagles?" PlotHole, many have questioned why somebody didn't just use a time-turner to stop all the bad stuff from ever happening. Somewhat justified in that Harry and Hermione ''don't'' actually change the past, but rather play out a StableTimeLoop. It's also mentioned that whenever someone ''does'' try to use one to make actual changes, it always goes ''very'' badly. Then [[spoiler:all the time-turners get destroyed in the fifth book anyway.]]

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*** In this class, we learn that the boggart can take on the form of a person's greatest fear. When Lupin pushes himself in front of Harry to protect him from the boggart-as-Dementor, the boggart turns into a full moon. Why a full moon? Hmmmm...
*** In the very next scene, Snape has to cover Lupin's class (because Lupin is "unable to teach at the moment" and he jumps ahead a few chapters to do a lesson on werewolves. He then finds an excuse to assign the entire class (or maybe it's just Gryffindor) to write up a report on werewolves, focusing on recognizing them, due tomorrow.
**** In the following scene, there's a pretty obvious wolf shape in the clouds during the Quiddich game.

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*** In this class, we learn that the boggart can take on the form of a person's greatest fear. When Lupin pushes himself in front of Harry to protect him from the boggart-as-Dementor, the boggart turns into a [[spoiler:a full moon. Why a full moon? moon?]] Hmmmm...
*** In the very next scene, Snape scene in the movie, [[spoiler:Snape has to cover Lupin's class (because Lupin is "unable to teach at the moment" and he jumps ahead a few chapters to do a lesson on werewolves. He then finds an excuse to assign the entire class (or maybe it's just Gryffindor) to write up a report on werewolves, focusing on recognizing them, due tomorrow.
****
the next day.]]
***
In the following scene, there's a pretty obvious wolf shape in the clouds during the Quiddich game.game.
**** And there's plenty more scenes like that foreshadowing the movie's reveals.
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*** In this class, we learn that the boggart can take on the form of a person's greatest fear. When Lupin pushes himself in front of Harry to protect him from the boggart-as-Dementor, the boggart turns into a full moon. Why a full moon? Hmmmm...
*** In the very next scene, Snape has to cover Lupin's class (because Lupin is "unable to teach at the moment" and he jumps ahead a few chapters to do a lesson on werewolves. He then finds an excuse to assign the entire class (or maybe it's just Gryffindor) to write up a report on werewolves, focusing on recognizing them, due tomorrow.
**** In the following scene, there's a pretty obvious wolf shape in the clouds during the Quiddich game.

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* TheAlcatraz: Azkaban, which was first mentioned in [[Literature/HarryPotterAndTheChamberOfSecrets Book 2]], becomes central to the plot in this one.
* AntagonistTitle: [[spoiler:Subverted; Sirius turns out to be a good guy.]]

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* TheAlcatraz: Azkaban, which was first mentioned in [[Literature/HarryPotterAndTheChamberOfSecrets Book 2]], becomes central to the plot in this one.
one.
* AntagonistTitle: [[spoiler:Subverted; Subverted. Sirius turns out to be a good guy.]]



* BigBad: The Dementors and [[spoiler:Peter Pettigrew]].

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* BigBad: The Dementors and [[spoiler:Peter Pettigrew]].Peter Pettigrew.



* CassandraTruth: Due to the convoluted truth of what really happened that night, Harry has a hard time convincing anybody. Also done comically, as Trelawney doesn't believe a prophecy [[spoiler:that she herself just spoke]].

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* CassandraTruth: Due to the convoluted truth of what really happened that night, Harry has a hard time convincing anybody. Also done comically, as Trelawney doesn't believe a prophecy [[spoiler:that that she herself just spoke]].spoke.



*DeadpanSnarker: McGonagall throughout, but particularly in this book.



** Lupin's werewolf condition and the wizarding community's reactions to it may be a social commentary on living with HIV.

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** Lupin's werewolf condition and the wizarding community's reactions to it may was thought by fans to be a social commentary on living with HIV.HIV. WordofGod confirmed it later.



* ExtremeMeleeRevenge: When Harry first meets [[spoiler:Sirius]]. Harry becomes so enraged that [[spoiler:he forgets all about magic, forgets that Sirius is supposedly a powerful dark wizard trained by Voldemort himself, and forgets that Sirius is holding three wands. Harry charges Sirius down and nearly suffocates him]].

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* ExtremeMeleeRevenge: When Harry first meets [[spoiler:Sirius]]. Harry becomes so enraged that [[spoiler:he he forgets all about magic, forgets that Sirius is supposedly a powerful dark wizard trained by Voldemort himself, and forgets that Sirius is holding three wands. Harry charges Sirius down and nearly suffocates him]].him.



* FantasticTimeManagement: [[spoiler:Hermione Granger uses daily time travel to take more classes than would be otherwise possible.]]

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* FantasticTimeManagement: [[spoiler:Hermione Hermione Granger uses daily time travel to take more classes than would be otherwise possible.]]



** Dumbledore mentioning to Harry that Trelawney's current record is having only ''two'' accurate prophecies made.

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** Dumbledore mentioning to Harry that Trelawney's current record is having only ''two'' latest prophecy brings her number of accurate prophecies made.prophecys up to “two.”



* GoneHorriblyRight: The purpose behind telling no-one that [[spoiler:the secret keepers were switched]] was to make sure everyone went after Sirius Black. It worked.
* HeroWithBadPublicity: [[spoiler:Sirius.]]

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* GoneHorriblyRight: The purpose behind telling no-one that [[spoiler:the the secret keepers were switched]] switched was to make sure everyone went after Sirius Black. It worked.
* HeroWithBadPublicity: [[spoiler:Sirius.]]HeroWithBadPublicity: Sirius.



**Fudge rather pompously tells Hagrid that only trained “Hit Wizards” would have stood a chance. Somehow I think Hagrid would have faired better.



* NiceJobBreakingItHero: Harry's decision to spare [[spoiler:Wormtail's]] life enables the events, and by extension all of the deaths, in the remaining books to occur.

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* NiceJobBreakingItHero: Harry's decision to spare [[spoiler:Wormtail's]] Wormtail's life enables starts a chain reaction that leads to Voldemort’s return and basically the events, and by extension all plots of the deaths, in the remaining books to occur.four through seven.



* RedHerring: [[spoiler:Everyone believes that Sirius escaped Azkaban to kill Harry. His target was somebody else entirely.]]

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* RedHerring: [[spoiler:Everyone Everyone believes that Sirius escaped Azkaban to kill Harry. His target was somebody else entirely.]]



* SecretSecretKeeper: [[spoiler:Hermione's figured out Lupin's "condition" and kept it from the others, including Lupin himself, until she came to the belief that he was an accomplice to Sirius Black.]]

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* SecretSecretKeeper: [[spoiler:Hermione's Hermione's figured out Lupin's "condition" and kept it from the others, including Lupin himself, until she came to the belief that he was an accomplice to Sirius Black.]] Black. She even thought the teachers were unaware.



* StealthPun

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*StealthBurn: McGonagall gets one in after Trelawney tells the table about how unlucky it is for thirteen people to dine together.
-->'''McGonagall:''' Tripe, Sybill?
* StealthPunStealthInsult
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The third ''Literature/HarryPotter'' book. Published in 1999. Often considered the point at which the series [[GrowingTheBeard Grew the Beard]].

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The '''''Harry Potter and the Prisoner of Azkaban''''' is the third ''Literature/HarryPotter'' book. Published in 1999. Often considered the point at which the series [[GrowingTheBeard Grew the Beard]].
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* DragonTheirFeet: the public's general opinion of Sirius Black; on the day after Voldemort's downfall, he was outed as a Death Eater, and went on to kill 13 people (12 Muggles, plus the wizard trying to apprehend him) before finally getting caught.

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** Sirius's Animagus form is as a black dog



* ThirteenIsUnlucky: Sirius Black's last crime before being imprisoned: murder of 13 people. [[spoiler:FridgeBrilliance kicks in when you think of the 13th "victim", Peter Pettigrew.]] Trelawney brings this up during the Christmas feast, claiming that "the first to rise will be the first to die". Harry and Ron get up at the same time.

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* ThirteenIsUnlucky: Sirius Black's last crime before being imprisoned: murder of 13 people. [[spoiler:FridgeBrilliance kicks in when you think of the 13th "victim", actually Peter Pettigrew.]] Trelawney brings this up during the Christmas feast, claiming that "the first to rise will be the first to die". Harry and Ron get up at the same time.



** Possible {{Foreshadowing}}/FridgeBrilliance, as you realize there were [[spoiler:already thirteen people at the table because Peter Pettigrew disguised as Scabbers was in Ron's pocket, and Dumbledore stands up to greet Trelawney, making him the first to rise out of the thirteen.]]
* TimeTravel

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** Possible {{Foreshadowing}}/FridgeBrilliance, as you realize there were [[spoiler:already thirteen people at the table because Peter Pettigrew disguised in Animagus form as Scabbers was in Ron's pocket, and Dumbledore stands up to greet Trelawney, making him the first to rise out of the thirteen.]]
* TimeTravelTimeTravel: The Time Turners
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* PetTheDog: In the film version. When Snape realizes there's an angry werewolf standing behind him, the first thing he does is to push three students he loathes behind himself to protect them.
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* NiceJobBreakingItHero: Harry's decision to spare [[spoiler:Wormtail's]] life enables the events, and by extension all of the deaths, in the remaining books to occur.
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* OurGryphonsAreDifferent: Buckbeak the Hippogriff is introduced in this book.
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didn\'t finish


* DidYouJustFlipOffCthulhu: Malfoy when he insults Buckbeak after Harry managed to tame [[spoiler:and ride]] him. Needless to say, [[spoiler:Buckbeak nearly tore Malfoy's off at the insult]].

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* DidYouJustFlipOffCthulhu: Malfoy when he insults Buckbeak after Harry managed to tame [[spoiler:and ride]] him. Needless to say, [[spoiler:Buckbeak nearly tore Malfoy's arm off at the insult]].

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* DidYouJustFlipOffCthulhu: Malfoy when he insults Buckbeak after Harry managed to tame [[spoiler:and ride]] him. Needless to say, [[spoiler:Buckbeak nearly tore Malfoy's off at the insult]].



* FakeKillScare: At one point, they hear what they think is the hippogriff being executed. [[spoiler:It turns out to be the executioner hitting the fence (in the movie: a pumpkin) with his axe after he finds out the hippogriff escaped.]]

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* FakeKillScare: At one point, they hear what they think is the hippogriff Buckbeak being executed. [[spoiler:It turns out to be the executioner hitting the fence (in the movie: a pumpkin) with his axe after he finds out the hippogriff Buckbeak escaped.]]

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* MyFriendsAndZoidberg: Oliver Wood does it to himself, when he lists the members of the Quidditch team:
-->'''Oliver:''' We've got three superb Chasers. We've got two unbeatable Beaters. And we've got a Seeker who has never failed to win us a match! ''(after long pause in which he realises he's forgotten someone)'' And me.
:: Which leads to a rather heart-warming moment when the rest of the team (including Fred and George) say they think he's a great Keeper.

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* MyFriendsAndZoidberg: Oliver Wood does it to himself, when he lists the members of the Quidditch team:
-->'''Oliver:''' We've
team: "We've got three superb Chasers. We've got two unbeatable Beaters. And we've got a Seeker who has never failed to win us a match! ''(after long pause in which he realises he's forgotten someone)'' And me.
:: Which
me." This leads to a rather heart-warming moment when the rest of the team (including Fred and George) say they think he's a great Keeper.
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* DisappointedInYou: Lupin

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* DisappointedInYou: Lupin[[CoolTeacher Lupin]] to Harry, making him feel a lot worse than he did when [[SadistTeacher Snape]] was the one giving him into trouble.
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The book's popularity may be partially due to the introductions of Sirius and Lupin, considered by some fans to be two of the coolest characters in the series. It also marks the point where the books started to become [[StoryArc more serialized]] with each ending [[SequelHook setting up the next one]]. It also has, quite possibly, the most complicated plot of the entire series, drawing in characters and events from all over the place; the Prisoner of Azkaban is obviously important, but the ''way'' he is important zig-zags several times over the course of the novel, and the same thing happens to a ''bunch'' of other characters. The end result is that, by the end of the novel, the story's landscape has irrevocably changed... and readers know that things are going to get ''really'' interesting from now on.

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The book's popularity may be partially due to the introductions of Sirius [[ByronicHero Sirius]] and Lupin, [[BadassBookworm Lupin]], considered by some fans to be two of the coolest characters in the series. It also marks the point where the books started to become [[StoryArc more serialized]] with each ending [[SequelHook setting up the next one]]. It also has, quite possibly, the most complicated plot of the entire series, drawing in characters and events from all over the place; the Prisoner of Azkaban is obviously important, but the ''way'' he is important zig-zags several times over the course of the novel, and the same thing happens to a ''bunch'' of other characters. The end result is that, by the end of the novel, the story's landscape has irrevocably changed... and readers know that things are going to get ''really'' interesting from now on.
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That\'s a trope of OOTP, not POA.


* WhiteSheep: [[spoiler:Sirius Black]]
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* IconicOutfit: [[TheSmartGuy Hermione's]] pink hooded sweater in the third film.
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** Possible {{Foreshadowing}}/FridgeBrilliance, as you realize there were [[spoiler:already thirteen people at the table because Peter Pettigrew disguised as Scabbers was in Ron's pocket, and Dumbledore stands up to greet Trelawny, making him the first to rise out of the thirteen.]]

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** Possible {{Foreshadowing}}/FridgeBrilliance, as you realize there were [[spoiler:already thirteen people at the table because Peter Pettigrew disguised as Scabbers was in Ron's pocket, and Dumbledore stands up to greet Trelawny, Trelawney, making him the first to rise out of the thirteen.]]
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* HeroWithBadPublicity: [[spoiler:Sirius.]]


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* MisunderstoodLonerWithAHeartOfGold: [[spoiler:Sirius.]]
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* AntagonistTitle: [[spoiler:Subverted; Sirius turnes out to be a good guy.]]

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* AntagonistTitle: [[spoiler:Subverted; Sirius turnes turns out to be a good guy.]]
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* BigBad: The Dementors and [[spoiler:Peter Pettigrew]].
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Moving to proper Namespace.

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[[quoteright:302:http://static.tvtropes.org/pmwiki/pub/images/HP3.gif]]

->''"[[WeirdnessMagnet I don't go looking for trouble.]] [[TheCallKnowsWhereYouLive Trouble usually finds me.]]"''
-->-- '''Harry Potter'''

The third ''Literature/HarryPotter'' book. Published in 1999. Often considered the point at which the series [[GrowingTheBeard Grew the Beard]].

Sirius Black has escaped from [[TheAlcatraz Azkaban, the wizarding prison]]. In response, the [[TheGovernment Ministry of Magic]] sends Dementors, a race of dreadful creatures which either wear or are made of {{Black Cloak}}s, to guard Hogwarts and their {{Emotion Eat|er}}ing powers seem to affect Harry especially. Remus Lupin, meanwhile, makes his first appearance, taking on the [[HighTurnoverRate dreaded Defense Against the Dark Arts post]].

The book's popularity may be partially due to the introductions of Sirius and Lupin, considered by some fans to be two of the coolest characters in the series. It also marks the point where the books started to become [[StoryArc more serialized]] with each ending [[SequelHook setting up the next one]]. It also has, quite possibly, the most complicated plot of the entire series, drawing in characters and events from all over the place; the Prisoner of Azkaban is obviously important, but the ''way'' he is important zig-zags several times over the course of the novel, and the same thing happens to a ''bunch'' of other characters. The end result is that, by the end of the novel, the story's landscape has irrevocably changed... and readers know that things are going to get ''really'' interesting from now on.

As a side note, this is the only volume in the series where [[BigBad Lord Voldemort]] doesn't make an appearance.
----
!!Tropes exclusive to this book or at least especially prominent in it:

* TheAlcatraz: Azkaban, which was first mentioned in [[Literature/HarryPotterAndTheChamberOfSecrets Book 2]], becomes central to the plot in this one.
* AntagonistTitle: [[spoiler:Subverted; Sirius turnes out to be a good guy.]]
* AnxietyDreams
* AwfulTruth: Done twice, first with the story Harry overhears about how Sirius betrayed Harry's parents, and isn't just an insane criminal, then [[spoiler:the real truth of Peter's even crueller betrayal.]] Whether the real truth is slightly better or slightly worse is debatable. On one hand, the traitor [[spoiler:wasn't James's best friend, and said best friend is still alive.]] On the other hand [[spoiler:Peter not only betrayed the Potters and murdered about a dozen innocent people, but also framed Sirius for his crimes, and got to live happily at the Weasleys for twelve years.]]
* BerserkButton
** When Snape calls Hermione an annoying know-it-all, Ron lashes out at Snape, despite [[HypocriticalHumour having himself used that insult on Hermione.]]
** And don't call Hagrid pathetic in front of Hermione, unless you're looking for a slap in the face...
** This book shows us how [=McGonagall=] reacts to someone deliberately pulling off foul play in Quidditch. TWICE.
** And don't forget Harry's reaction to Aunt Marge's taunts.
* BewareTheNiceOnes: [[spoiler:Remus Lupin.]] At the climax of the book when he and [[spoiler:Sirius]] confront [[spoiler:Peter with the evidence of his betrayal, Sirius asks him casually "Shall we kill him together?" and Remus simply answers "Yes, I think so".]]
* BookEnds: The first and last chapters are called "Owl Post" and "Owl Post Again", respectively.
* BurnTheWitch: [[LampshadeHanging Lampshaded]]: Harry's over-the-summer essay is about how pointless medieval witch burnings were, since the few times the victim was a wizard and not a poor ordinary Muggle, they could simply cast a flame-freezing charm and pretend to be suffering. They go on to mention that some witches and wizards allowed themselves to be caught and burned multiple times because [[TooKinkyToTorture they liked the fact that it felt like being tickled.]]
* CareBearStare: ''Riddikulus'' (laugh!) has this effect on boggarts and ''Expecto Patronum'' (think happy thoughts!) on Dementors.
* CassandraTruth: Due to the convoluted truth of what really happened that night, Harry has a hard time convincing anybody. Also done comically, as Trelawney doesn't believe a prophecy [[spoiler:that she herself just spoke]].
* CatsAreMean: Ron firmly believes this for most of the book.
* CerebusSyndrome: [[MarkReadsHarryPotter Mark]] says it best:
-->''Hey children did you enjoy this wonderful children's book full of wonderful awesome things for children well let me WRITE A BOOK BUILT ENTIRELY ON THE FEAR THAT A DERANGED, PSYCHOPATHIC MURDERER IS GOING TO EITHER KILL YOU IN YOUR SLEEP OR DESTROY YOU IN ANY SORT OF OPEN, PUBLIC SPACE.''
* ChekhovsGun: The series [[ChekhovsGun/HarryPotter has its own page.]]
* ContrivedCoincidence
** [[spoiler:If the climax hadn't occurred on a night with a full moon, Pettigrew would have been arrested and Sirius cleared, completely changing the arc of the next 4 books. Lupin probably would have also remained teacher, since Snape wouldn't have found Sirius while trying to bring Lupin his Wolfsbane potion and ultimately outed Lupin as a werewolf out of spite. This is especially funny when its revealed that Voldemort cursed the Defense Against Dark Arts position. So with this curse Voldemort was ultimately able to make a new body.]]
** [[spoiler:The only reason that Sirius even breaks out of Azkaban in the first place is that A) the Weasleys win the wizard lottery, B) this is apparently front-page news, C) Ron has Scabbers in the picture, and D) Cornelius Fudge just happens to be carrying that exact issue of The Daily Prophet when he visits Black's cell.]]
** Harry just happens to get his hands on the Marauder's Map the very same year that one of its creators is teaching at Hogwarts. Not to mention the other two surviving creators also being around Hogwarts for that same year.
* CoolTeacher: Lupin
* CovertPervert: ''A History of Magic'' contains an amusing little anecdote: witches and wizards who were caught and burned at the stake cast a charm that would protect them from the fire while all they felt was a gentle tickling sensation. Wendelin the Weird enjoyed it so much that she allowed herself to be caught ''forty-seven'' times. Yep, [[TooKinkyToTorture she definitely enjoyed it.]]
* CruelMercy: Harry asks [[spoiler:Sirius and Lupin]] to spare [[spoiler:Pettigrew]]'s life, but not because he feels sorry for him; he just doesn't want them to become murderers. "He can go to Azkaban. If anyone deserves that place, he does."
* DirtyCoward: [[spoiler:Peter Pettigrew]]
* DisappointedInYou: Lupin
* DoctorsOrders: Madam Pomfrey asserts herself quite strongly, if not always successfully, when authority figures want to speak to students in her care.
* DoesThisRemindYouOfAnything
** Lupin's werewolf condition and the wizarding community's reactions to it may be a social commentary on living with HIV.
** A number of people (including the director of the movie) believed that Lupin was gay, so it could also be a metaphor for homosexuality; however, Rowling didn't write the character as gay (he married Tonks) and [[WordOfGod explicitly stated]] it was an HIV metaphor, so the signs don't fit quite as neatly.
* DynamicEntry: ''Lupin busts the door open'' -- "EXPELLIARMUS!"
* EmotionEater: The Dementors.
* EmptyShell: The result of the Dementor's Kiss.
* EverybodyLives: Along with ''Chamber of Secrets'', the only book in the series where no character dies (though several characters die in the {{Backstory}}).
* EvilFormerFriend: [[spoiler:Peter]], although evil is too respectful a word to describe him.
* [[EvilDetectingDog Evil Detecting Cat]]: Crookshanks. Justified in that WordOfGod stated that Crookshanks is half-Kneazle, a magical cat-like animal that can tell if someone is untrustworthy.
* ExactlyWhatItSaysOnTheTin: Hagrid being Hagrid, he sees nothing wrong with assigning ''The Monster Book of Monsters''. You have to tame the book before you can open it, and it is absolutely feral until you do.
* ExtremeMeleeRevenge: When Harry first meets [[spoiler:Sirius]]. Harry becomes so enraged that [[spoiler:he forgets all about magic, forgets that Sirius is supposedly a powerful dark wizard trained by Voldemort himself, and forgets that Sirius is holding three wands. Harry charges Sirius down and nearly suffocates him]].
* FakeKillScare: At one point, they hear what they think is the hippogriff being executed. [[spoiler:It turns out to be the executioner hitting the fence (in the movie: a pumpkin) with his axe after he finds out the hippogriff escaped.]]
* FantasticTimeManagement: [[spoiler:Hermione Granger uses daily time travel to take more classes than would be otherwise possible.]]
* FateWorseThanDeath. The Dementor's Kiss.
* FingerSnapLighter: Lupin
* {{Foreshadowing}}
** Lupin teaching Harry's class how to deal with the boggart, a magical creature that is warded off with the combination of a spell and positive thoughts, foreshadowing him teaching Harry how to deal with Dementors.
** Dumbledore mentioning to Harry that Trelawney's current record is having only ''two'' accurate prophecies made.
** Harry's two Quidditch-match related dreams foreshadow two following books:
*** After the match against Ravenclaw, Harry dreams about following a silver shape through a forest, together with a galloping shape before coming to a clearing, foreshadows both Harry's own Patronus (a stag) and the scene in book seven [[spoiler:where Harry follows Snape's Patronus (a doe) through a forest into a clearing]].
*** Before the Quidditch match final, Harry dreams that the Slytherins came to the match riding dragons and that he has to dodge the dragons' fire on his broom. Cue book four, where [[spoiler:Harry dodges a dragon on his broom in the first trial]].
* GameBreakingBug: The time-turner has the potential to be this for the entire series; much like the infamous ''The Lord of the Rings'' "why didn't they just use the eagles?" PlotHole, many have questioned why somebody didn't just use a time-turner to stop all the bad stuff from ever happening. Somewhat justified in that Harry and Hermione ''don't'' actually change the past, but rather play out a StableTimeLoop. It's also mentioned that whenever someone ''does'' try to use one to make actual changes, it always goes ''very'' badly. Then [[spoiler:all the time-turners get destroyed in the fifth book anyway.]]
* GirlsWithMoustaches: Aunt Marge, in addition to being "large, beefy and purple-faced", has a small moustache.
* AGlassInTheHand: After one jibe too many about his family, Harry makes the glass ''Marge'' is holding shatter. She assumes she was gripping it too hard, having done the same thing before.
* GoldenMeanFallacy: Lupin explains that this is one of the advantages to tackling a boggart in groups. It might try and combine two peoples' fears and end up with something a lot less scary than either of them.
* GoneHorriblyRight: The purpose behind telling no-one that [[spoiler:the secret keepers were switched]] was to make sure everyone went after Sirius Black. It worked.
* ImStandingRightHere: Aunt Marge makes several disparaging remarks about Harry and his parents while sitting at the same table as Harry. Harry spends most of the week trying very, very hard to think about something else.
* IntellectualAnimal: The Wolfsbane Potion sort of invokes this. When a werewolf drinks it, they are able to keep their mind human when transformed.
* ItWasAGift: [[spoiler:The Firebolt and Pigwidgeon.]]
* IWillTearYourArmsOff: Hagrid says that if he had known Sirius' role in the Potters' death, he would have ripped him limb from limb. Hagrid is a half-giant, so a threat like this should be taken ''very'' seriously.
* KickTheDog: It's bad enough that Snape belittles and insults [[ButtMonkey Neville]] in his own classes... but to have a small rant about how useless he is ''to another teacher'' is beyond cruel.
* KnowNothingKnowItAll: Snape has a moment of this when subbing for Lupin, claiming that the Kappa is more commonly found in Mongolia when it's actually ''Japanese''. This gets followed up on in ''Fantastic Beasts'': "Snape hasn't read this."
* LaughingMad: Offscreen, Sirius when he's arrested, which certainly doesn't help his case, even though TheReveal makes it obvious that it was due to [[spoiler:heartbroken grief over James's death, the betrayal and the overwhelming irony of Peter's escape.]]
* MacGuffinLocation: Azkaban
* MomentOfWeakness: Harry's blowing up Aunt Marge.
* MyFriendsAndZoidberg: Oliver Wood does it to himself, when he lists the members of the Quidditch team:
-->'''Oliver:''' We've got three superb Chasers. We've got two unbeatable Beaters. And we've got a Seeker who has never failed to win us a match! ''(after long pause in which he realises he's forgotten someone)'' And me.
:: Which leads to a rather heart-warming moment when the rest of the team (including Fred and George) say they think he's a great Keeper.
* {{Narm}}: In-universe example: the ''Riddikulus'' spell involves making your worst fear funny.
* NeverTheSelvesShallMeet
* OverlyLongScream: Ron uses up two whole lines of text to scream "AAAAAAAAAAAAAAAAAAAAAARRRRRRRRRGH! NOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!!!" after he wakes up to find Sirius Black standing over him with a knife.
* PowerIncontinence: What happens when teen witches and wizards lose their temper.
* TheQuisling: In TheReveal, [[spoiler:Peter Pettigrew]] is found to be one.
* RageQuit: Hermione. And it is ''awesome''.
* RedHerring: [[spoiler:Everyone believes that Sirius escaped Azkaban to kill Harry. His target was somebody else entirely.]]
* RushedInvertedReading: When Hermione tells Professor [=McGonagall=] about Harry getting a Firebolt for Christmas and then the teacher goes to temporarily confiscate it so that it can be checked for jinxes/hexes (on the chance that Sirius Black sent it), Hermione hides her face behind a book that she holds upside down.
* SecretKeeper: The TropeNamer.
* SecretSecretKeeper: [[spoiler:Hermione's figured out Lupin's "condition" and kept it from the others, including Lupin himself, until she came to the belief that he was an accomplice to Sirius Black.]]
* StableTimeLoop: See also YouAlreadyChangedThePast and YouCantFightFate, below.
* StabTheSalad: [[spoiler:Buckbeak's "death".]]
* StealthPun
** Aunt Marge, who is a professional dog breeder, refers to bitches when talking about Harry's mother.
-->'''Marge:''' You see it in dogs all the time, if there's something wrong with the bitch, there's something wrong with the pup.
** She might be using "pup" as a double entendre as well. "Pup" can mean "a cheeky or arrogant boy or young man", which would fit Aunt Marge's view of Harry.
* StevenUlyssesPerhero: Many instances throughout the series, but this book introduces two particularly good examples: the werewolf Remus Lupin (Romulus and Remus were humans raised by wolves in Roman mythology; "lupine" means "wolf-like") and Sirius Black (Sirius is another name for the Dog Star; he transforms into a black dog).
* TalkingInYourSleep
* ThirteenIsUnlucky: Sirius Black's last crime before being imprisoned: murder of 13 people. [[spoiler:FridgeBrilliance kicks in when you think of the 13th "victim", Peter Pettigrew.]] Trelawney brings this up during the Christmas feast, claiming that "the first to rise will be the first to die". Harry and Ron get up at the same time.
-->'''Trelawney:''' My dears! Which of you left his seat first? Which?\\
'''[=McGonagall=]:''' I doubt it will make much difference, unless a mad axe-man is waiting outside the doors to slaughter the first into the Entrance Hall.
** Possible {{Foreshadowing}}/FridgeBrilliance, as you realize there were [[spoiler:already thirteen people at the table because Peter Pettigrew disguised as Scabbers was in Ron's pocket, and Dumbledore stands up to greet Trelawny, making him the first to rise out of the thirteen.]]
* TimeTravel
* TimeTravelTenseTrouble
* TimeyWimeyBall: Largely [[AvertedTrope averted]], but there is one slight inconsistency. Hermione mentions that a lot of wizards who have abused {{time travel}} ended up "killing their past or future selves". The immutable time-line model used should logically preclude killing your '''past''' self (although not killing your future self). Perhaps Hermione is mistaken, or exaggerating. Or she's referring to the very first time someone goes back in time. Being a StableTimeLoop, there has to be a time where they actually go back. Then they panic and kill their past self, since there are two of that person in the time period. Someone else could easily see someone kill themselves, then see the killer vanish and report it.
* TotemPoleTrench: Totem Pole Dementor Cloak, actually.
* TrickedOutTime
* TrickTwist: And how!
* TurnCoat: [[spoiler:Peter]], textbook.
* UndyingLoyalty: [[spoiler:Sirius]] and Lupin are furious that [[spoiler:Peter]] was not this to James, because they would have been, not only to James, but to [[spoiler:Peter]] as well.
-->[[spoiler:'''Peter:''']] You don't understand! He would have killed me, [[spoiler:Sirius!]]\\
[[spoiler:'''Sirius:''']] ''Then you should have died! Died rather than betray your friends, as we would have done for you!''
* VillainsWantMercy: [[spoiler:Peter]] begs Ron, Hermione and Harry to protect him from [[spoiler:Sirius]] and Remus (after he fails with his begging with them).
* WeaksauceWeakness: Boggarts are defeated by ''laughter''.
* WeirderThanUsual: Harry and Dumbledore regarding Trelawney. When the EccentricMentor has to ask "Stranger than usual, you mean?"...
* WhatDoTheyFearEpisode: Chapter 7. Lupin gives the class a practical lesson in dealing with the shape-shifting boggart. He does not give Harry a go for fear of it turning into Voldemort.
* WhatTheHellHero
** Hagrid to Harry and Ron for alienating Hermione for most of the book.
** Later, [[spoiler:Hermione to Lupin when she thought he was the one who has been helping Sirius into Hogwarts, even though she was wrong.]]
* WhiteSheep: [[spoiler:Sirius Black]]
* YouAlreadyChangedThePast: The StableTimeLoop. Which renders all those {{Fanfic}}s in which the characters PeggySue themselves back in time to [[FixFic fix things]] all the more incompatible with the {{canon}}.
* YouCantFightFate: See also YouAlreadyChangedThePast.
* YouDirtyRat: [[spoiler:Peter's animagus form,]] full stop. One has to wonder how James, [[spoiler:Sirius]] and Lupin didn't get suspicious about this, especially since WordOfGod says that an animal form is automatic and cannot be chosen by the wizard.
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