%% 1974 Film poster: http://static.tvtropes.org/pmwiki/pub/images/murder_on_the_orient_express_ver4_7581.jpg

''MurderOnTheOrientExpress'', or ''Murder in the Calais Coach'', is an Creator/AgathaChristie detective fiction murder mystery first published in 1934. Literature/HerculePoirot, the famous Belgian detective, is ready to return from his case in Syria when he is snowbound on the Orient Express. He is disturbed in his sleep by dead quiet and a passing figure in a red kimono, and when he awakes, the contemptible Ratchett is found having been stabbed 12 times to death. Poirot discovers he was actually a notorious American gangster, who had kidnapped and murdered a three-year-old heiress. The mystery begins to unravel as he discovers that the passengers have connections to the murdered man and the family of the child that man murdered.

The book was made into a successful movie in 1974, a MadeForTVMovie in 2001, and again in 2010 for ''Series/{{Poirot}}''.

'''Warning: many unmarked spoilers are below as the plot is [[ItWasHisSled well known]].'''

!!This story provides examples of the following:

* AdaptationalAngstUpgrade: In the original novel and most adaptations, Hercule rather cavalierly lets the murderers go free, but in the 1974 film and ''especially'' the 2010 ''Series/{{Poirot}}'' versions, [[spoiler: he is deeply conflicted before finally making the choice.]]
* AdultFear: The first few minutes of the movie - and the motive for Ratchett's murder - are horrifying on their own, but they might be especially hard on parents.
* ArtisticTitle: The 1974 film opens with a montage sequence by RichardWilliams depicting the kidnapping and murder of Daisy Armstrong via various {{Spinning Paper}}s.
* AssholeVictim: Ratchett's portrayed as a terrible man, so there isn't much sympathy when he is killed. We find out that he's so deserving of his fate that Poirot eventually lets his murderers go. This trope is exaggerated here.
* TheBadGuyWins: [[ZigZaggingTrope Averted, subverted, played straight]]... It depends on your definitions of "bad guy" and "win".
* BittersweetEnding: While the murderers do get off scot-free, that's because even Poirot agrees that Ratchett's crime against the Armstrong family (who they all had connections to) had been paid back justly, with interest.
* BusmansHoliday
* TheButlerDidIt: [[spoiler:He was ''one'' of the people who did it, that is.]] Also spoken word-for-word, but as part of a RunningGag by the line owner always implicating the most recent interviewee.
* ClockDiscrepancy: The broken watch also appears - and Poirot points out that the killer wants him to think that the murder happened at that time.
* ClosedCircle: Not only are they on a train, but trapped in a snowdrift.
* ComicallyMissingThePoint: Subverted twice in the 1974 version by both Beddoes (intentionally) and Foscarelli. HilarityEnsues for Poirot.
-->'''Foscarelli''': "Hey, what are you reading, Mr. Beddoes?"\\
'''Beddoes''': "''Love's captive'', by Mrs Arabella Richardson."\\
'''Foscarelli''': "[[ComicallyMissingThePoint Is it about sex]]?"\\
'''Beddoes''': "[[ComicallyMissingThePoint No, it's about 10.30, Mr. Foscarelli.]]"
* DarkerAndEdgier: The 2010 adaptation, in spades.
* DownerBeginning: ''DAISY FOUND SLAIN.''
* {{Eagleland}}: The portrayal of the U.S. makes it obvious that Christie didn't know very much about it. For example, Poirot says that it is "obvious" that the Hungarian ambassador stationed in Washington D.C. must have been acquainted with the Armstrongs, a prominent family from Chicago.
** Caroline Hubbard embodies this whenever the opportunity presents itself. Then again, it's all an act.
** The Americans are also referred to as subjects rather than citizens. Of course, it is Poirot and Bouc doing this, and they might not consider the distinction to be important.
* EnclosedSpace: Being snowed in was the only reason the crime wasn't a total success.
* EverybodyDidIt: Former TropeNamer.
* EveryoneIsASuspect: Deconstructed. Many murder mysteries set up the plot so that every character had a motive; but why would someone be in a situation where everyone in the vicinity has a motive to kill them? If the whole situation is the result of a conspiracy plotted by all the people with a motive to bring the victim among them.
** The trope plays pretty much straight too. The only characters who are not suspects are Poirot himself, who was hearing some of the key events of the murder taking place and was asleep through others; and M. Bouc (Signor Bianchi in the 1974 film) and Dr. Constantine, who were incapable of being in the place of the murder at the time of the murder. In the 2010 adaptation, even the latter is one of the killers.
* EvilIsDeathlyCold: In the 2010 adaptation, the train's generator fails soon after it runs into the snowdrift, so everything gets progressively colder and darker as Poirot comes closer to the truth.
** Of course, rolling stock in this era was heated by steam produced from the locomotive, rather then from an electric generator (rolling stock of this period did have generators, getting power from the rolling from the wheels, which would cease to operate after a period stationary. However, this would only shut off the lights). Unless they [[IdiotBall shut down the locomotive or disconnected the steam heat pipes from the locomotive to the carriages]], [[JustTrainWrong the train would remain heated...]]
* FollowTheLeader: Very influential, inspiring many "trapped on a transportation device with a murderer" stories.
* {{Foreshadowing}}: The 1974 film has a couple of implications that Poirot recognized [[spoiler:Mrs. Hubbard as Linda Arden from the very beginning. He quotes Greta Garbo when they first meet, admits he saw the actress perform twice as Lady Macbeth to the Princess, and in one scene pointedly thanks her for "playing your part". He even paraphrases her lines as Lady Macbeth when she shows up with the dagger.]]
-->'''Poirot:''' [[spoiler:Why did you take this dagger from the place?]]
** When Ratchett first speaks to Poirot, he claims that he has enemies. Poirot notes that a man in a position to have enemies is unlikely to have only one. TheReveal is that there was indeed not "only one" killer.
* FromACertainPointOfView: How Princess Natalia Dragomiroff explains everything.
* FunetikAksent: Mrs. Hubbard, the Amurrican headed to Parrus.
* GorgeousPeriodDress
* TheKillerBecomesTheKilled
* TheKillerWasLeftHanded: One clue Poirot notices is that the victim was stabbed by both a right handed and left handed person.
* LetOffByTheDetective: With the victim being an AssholeVictim of the highest order, Poirot rationalises that his murder meant justice was done. Although he reveals the murder conspiracy, he also offers an "out" by coming up with a plausible enough explanation involving an unknown assassin that doesn't incriminate the guilty parties. Those in authority accept this explanation rather than go through the political, legal, and publicity nightmare of prosecuting twelve people (some of whom are wealthy and powerful) for the murder of said AssholeVictim of the highest order. In the 2010 version he only does so after an immense amount of soul-searching, and even then it's clear from his expression that he's not sure if he's done the right thing.
* MamaBear: [[spoiler: The real mastermind of the affair was Linda Arden, a.k.a Mrs. Hubbard, who did it to avenge her daughter and granddaughter]].
* MassiveMultiplayerScam
* MyGodWhatHaveIDone: Hinted at by Poirot who is not exactly happy with his SadisticChoice.
* OffOnATechnicality: How Ratchett managed to walk free after the killing of Daisy Armstrong. He still recognised that the public would have torn him apart the moment he left court, hence why he fled America and changed his name.
* OneDegreeOfSeparation: The passengers all are closely connected.
* OrientExpress: Obviously.
* OrgyOfEvidence: Not only are there a dozen suspects with a connection to the victim, but there are also a misplaced match, a pipe cleaner, a handkerchief, a button from a railway worker's uniform, a watch broken at entirely the wrong time, and sightings of a woman in a red kimono. Poirot, to his credit, dismisses most of these fairly quickly as [[RedHerring Red Herrings]].
* PapaWolf: [[spoiler: One of the murderers was the conductor Pierre Michel, the father of the Armstrong family maid who hung herself after being accused of the crime.]]
* PayEvilUntoEvil: The victim had been guilty of the kidnapping and murder of a small child years before. Poirot finds the man is so deserving of his murder that he decides ''not'' to turn the murderer over to the police, and even offers them a theory of how the murderer escaped the train which is as plausible as it is false.
* PinkertonDetective: Cyrus Hardman in the 1974 film version. The original novel has him employed by [=McNeil=]'s.
* PoirotSpeak
* PrettyInMink: The 1974 film had a few furs, and even the 2001 adaptation had a fur stole at the end.
* ProperLady: Mary Debenham.
* RedHerring: Literally referred to by Poirot during TheReveal : he points out that the mafia member and the red kimono were just "red herrings to confuse and deceive him", and even describes the night of the murder as the "night of the red herrings". See OrgyOfEvidence.
* RippedFromTheHeadlines: The kidnapping and murder of heiress Daisy Armstrong is very much based on the Lindbergh kidnapping case.
* SandInMyEyes: The reaction that the snow was dazzling a suspect's eyes actually turns out to be a clue.
* SceneryPorn: The 1974 film has ''lots'' of this.
* SeamlessSpontaneousLie: Everyone on the train was a part of the murder. They had to make up several lies to throw Poirot off their trail. This was something like a dozen people. That kept up a lie under the scrutiny of Poirot. On a train in the middle of the Alps.
** Though not so much spontaneous, as they intentionally planned their stories so that pretty much everyone had an alibi with someone who would have no reason to lie about it (who would suspect Arbuthnot and Macqueen to be in it together, or Mrs. Hubbard and Greta, or Foscarelli and Masterman). And the stories ''do'' have flaws, just not immediately obvious ones.
* SherlockScan: An odd example - Poirot is somehow able to intuit that a suspect previously worked as a cook thanks to his "nose for fine dining." In the 2010 adaptation, the clue is instead that he overheard them giving detailed instructions to the waiter when ordering dinner.
* SnowedIn
* StealthHiBye: In the '74 film, Ratchett takes the opportunity of the train entering a tunnel (and thus becoming dark) to leave unobserved.
* SympatheticMurderer
* ThrillerOnTheExpress: TropeNamer, along with the numerous examples that use the title format for a reference.
* UndercoverCopReveal: Cyrus Hardman explains to Poirot that he is a private detective and therefore has a fake passport. However, he conveniently avoids to say that he also used to be a cop and was involved in the investigation of the Armstrong case.
* VillainousBreakdown: In the 2010 adaptation, Cassetti[[spoiler:/Ratchett]] becomes increasingly unhinged as he realizes the people looking for retribution are on the train and starts praying to God for forgiveness.
* WhatYouAreInTheDark: In the 2010 adaptation, when Poirot discovers that everyone is the killer, he plans to turn them into the Yugoslavian police, regardless of how monstrous the victim was. Problem is, he and the train manager are the only witnesses and they are stuck in the middle of nowhere with all the suspects. They consider offing the two, [[HeWhoFightsMonsters until they realize that would make them like Cassetti]]. [[spoiler: He lets them go anyways]].
* YouNeverAsked: The solution to the mysterious handkerchief with a Н on it. It involves the Cyrillic alphabet and Princess Dragomiroff's first name.
* YouSaidYouWouldLetThemGo: Cassetti kills three-year-old Daisy just after the ransom had been paid and flees the country. [[PayEvilUntoEvil He gets what he deserves.]]
* ZigZaggingTrope: TheBadGuyWins. Trust us, the "bad guy" and "wins" parts are tossed every which way.