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->''We gotta get off this rock, Chuck.''

''Shutter Island'' is a 2003 novel by Creator/DennisLehane.

In 1954, US Marshal Teddy Daniels and his new partner Chuck Aule are assigned to investigate the disappearance of multiple murderess Rachel Solando, who is a patient at Shutter Island's Ashecliffe Hospital, a mental hospital for the most violent of the criminally insane. It is revealed that Andrew Laeddis, the man responsible for Daniels's wife's death, is incarcerated there as well.

As the marshals investigate further, they begin to uncover hints that Ashecliffe Hospital may be home to a living nightmare of Nazi-esque experimentation on unwilling patients.

But of course, all is not as it seems...

Perhaps one of the most heavily [[RuleOfSymbolism symbolic]] novels/films in years, to the extent that [[MindScrew it will screw with your mind HARD]].

[[Film/ShutterIsland Adapted into a movie in 2010]].

!!Provides Examples Of:

* ArcWords: "Why you all wet, Baby?"
* AllGermansAreNazis: Teddy automatically assumes that the German doctor working in the asylum is some kind of UsefulNotes/JosefMengele-like MadDoctor, continuing his experiments on American soil. Teddy's paranoia about Germans turns out to have a comprehensible source -- he was present at the liberation of the Dachau concentration camp. After the Allied soldiers saw what had been done to the prisoners, they put all the guards up against a wall and summarily executed them ([[TruthInTelevision an actual event]]).
* AmbiguousEnding: The ending of the novel is unclear as to [[spoiler:which "reality" is true. It is unclear whether he has truly regressed, or if he wishes to "die" (at the very least, lose his ability for conscious thought, through lobotomy) in order to avoid living with the knowledge that his wife murdered their children and he is her murderer.]] The ending of the film is less ambiguous, and indicates that Teddy has made a conscious choice.
* AStormIsComing: Said by the captain of the boat at the beginning of the film.
* BadassBoast:
-->'''Teddy Daniels:''' ''We're federal marshals on a federal facility. That's the authorization of God Himself. We don't answer to you. We don't explain to you. We can [[GroinAttack choose to shoot you in the dick]], boy, and there's not a court in the country that would even hear the case... So open up the [[PrecisionFStrike fucking]] gate.''
* BedlamHouse: A very good example of [[spoiler: a subversion, as the horrific experiments are all part of the protagonist's delusions. The story plays with the audience, as it is because of familiarity with the trope that one so readily accepts Daniels's version of reality as truth.]]
** The background of the story is a [[spoiler: bureaucratic conflict to avoid the institution becoming this. Dr. Cawley is a ReasonableAuthorityFigure who wants to help Andrew Laeddis/Teddy Daniels overcome his condition, but Dr. Naehring and the hospital board believe he's beyond hope and requires lobotomy. The ending implies that Teddy decided to TakeAThirdOption.]]
%%* CrusadingWidower
* TheFifties: A very grim portrayal of the time period, bordering on CrapsackWorld. UsefulNotes/ColdWar, [[RedScare McCarthyism]], fresh memories of [[UsefulNotes/NaziGermany Nazi atrocities]], rampant crime and general paranoia form the zeitgeist.
* FramingDevice: The novel is presented as Dr. Sheehan's desire to set the record straight at last.
* GoAmongMadPeople: It's set in a mental hospital.
* ItsPersonal: Teddy takes on the case specifically because of its link to his wife.
* LighthousePoint: The lighthouse at the end of the island, that the staff says contains the septic system, but others say contains a lobotomy lab. [[spoiler: It's actually an office.]]
* LockedRoomMystery: How did Rachel Solando escape? "It's as if she evaporated straight through the walls."
* MeaningfulName: Toward the end of the book, Dr. Cawley remarks on the irony of how Teddy [[spoiler: even in his intent to hide the truth from himself, gave his primary psychiatrist the name "Chuck Aule".]] Say it five times fast.
* MummiesAtTheDinnerTable: [[spoiler: Dolores suggests doing this with their drowned children's bodies, just before Andrew shoots her for killing them.]]
* OnlyKnownByTheirNickname: Teddy's first name is actually "Edward", but everyone calls him Teddy. [[spoiler:This helps hide the fact that his 'name' is actually an anagram for Andrew Laeddis.]]
* OnlySaneMan: [[spoiler: Subverted.]] Teddy believes he is one. [[spoiler:He is wrong.]]
* ThePreciousPreciousCar: Teddy blows up Dr. Crawley's beloved car in order to create a diversion.
* {{Room 101}}: Teddy assumes the lighthouse is one.
* ShellShockedVeteran: Teddy's got nightmares and perhaps a drinking problem because of his WWII experience. Specifically for [[spoiler: liberating the Dachau concentration camp and participating in a real-life massacre of Nazi officers as a result of GoMadFromTheRevelation on seeing the bodies of the victims, that the Allied authorities subsequently covered up.]]
* TheShrink: In Teddy's eyes, the psychiatrists are the evil version of this trope. [[spoiler: In reality, they are only trying to help him overcome his madness.]]
%%* SignificantAnagram
* ThroughTheEyesOfMadness: [[spoiler:Teddy Daniels]].
* TomatoInTheMirror: [[spoiler: Teddy Daniels is Andrew Laeddis]].
* TomatoSurprise: The missing Dr. Sheehan turns out to be [[spoiler: Teddy's new partner, Chuck Aule]].
* TwistEnding: One that would make Creator/RodSerling and Creator/MNightShyamalan proud.
* UnreliableNarrator: [[spoiler:Teddy Daniels]].
* USMarshal: Teddy Daniels and his partner.
* WasItAllALie: And a decidedly cruel, sad version of it, because for once [[spoiler:"TheMole" was actually doing it for the protagonist's own good]].
--> '''[[spoiler:Chuck/Lester]]''': I'm genuinely sorry about that... I never wanted to leave you feeling betrayed. You have to believe me. \\
... \\
'''[[spoiler:Teddy/Andrew]]''': You were my friend. I trusted you... You were my ''friend,'' [[spoiler:Chuck]]. Oh, I'm sorry, '''''[[spoiler:Lester]]'''''. \\