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''Death on the Nile'' is a 1937 mystery novel by Creator/AgathaChristie.

Literature/HerculePoirot is on holiday in Egypt, on a Nile River cruise. Among the other passengers is Linnet Ridgeway, a rich, beautiful heiress, honeymooning with her husband Simon Doyle. Doyle was engaged to Linnet’s best friend, Jacqueline de Bellefort, before he met Linnet, and broke it off. Heartbroken and wanting revenge on her former friend for stealing her fiancé, Jacqueline started following them everywhere they go. When Linnet gets killed, Jacqueline is the obvious suspect. But is that really the case?

The story was adapted for the screen twice, as a 1978 film and as a 2004 episode of the television series ''Series/{{Poirot}}''. It was also adapted for BBC Radio 4 in 1997, with John Moffatt playing Poirot.

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!! This book and its adaptions provide examples of:
* AdaptationDistillation: The 1978 film version simplified the plot and removed several superfluous characters.
* AdaptationalHeroism: Downplayed with Simon Doyle in the 1978 film version, but only in small details that do not change the plot in any way. For example, [[spoiler:he is initially reluctant to go through with the killing of Louise, preferring to pay her, and in the final summation he is presented a bit more sympathetically than his counterpart in the book.]]
** Jim Ferguson comes across a bit more sympathetically in this version too. This is partly because he replaces Tim Allerton as Rosalie's love interest.
* AdaptationalVillainy: Similarly, downplayed with Jacqueline de Bellefort in the 1978 version. [[spoiler:Much of her exposition to Poirot at the end is omitted, and replaced by a denial act.]]
* AffablyEvil: [[spoiler: Both Andrew Pennington and Simon Doyle.]]
* TheAlcoholic: Mrs. Otterbourne.
* AlcoholicParent: Mrs. Otterbourne.
* AssholeVictim: Linnet isn't one of the worst Christie examples, but stealing her best friend's fiancé makes her easy to dislike.
** In the beginning of the book, she mentions to Jackie that she's having a number of houses on her property knocked down and the people moved, because they make her property look unsightly. It's slightly zigzagged in that she says that she's having new and better houses built for them, and that most of the people agreed, but she mentions too that some of the residents don't want to move, and she just can't fathom why.
* BetterToDieThanBeKilled: [[spoiler:Jacqueline kills herself and Simon rather than being executed for Linnet's murder. ]]
* {{Blackmail}}: [[spoiler: Louise. It gets her killed.]]
* BrokenBird: Poor Rosalie Otterbourne.
* BusmansHoliday: Once again, Poirot must solve a murder while on vacation.
* ClingyJealousGirl: Jacqueline to Simon. [[spoiler:At least, that's the act she puts on. ''Linnet'' is actually the one Simon viewed as fitting this trope in regards to him.]]
* CompositeCharacter: Rosalie Otterbourne in the 1978 film is a composite of three separate characters from the book: Rosalie, Cornelia Robson, and Tim Allerton. However, Ms Bowers is given Cornelia's backstory regarding her history with the Ridgeways.
** The 2004 version combines the roles of Cornelia Robson and Miss Bowers.
** Both versions remove the character of Fanthorp, having Mr. Ferguson take over the role he played the night of the murder. The 1978 film also makes Ferguson into Rosalie's love interest since Tim Allerton does not appear.
** Linnet's maids, Marie and Louise, are combined into the same character in both film versions.
* CoolOldGuy: Poirot, as always. Mrs Allerton and Colonel Race too.
* CouldntFindAPen: The killer uses the victim's blood to trace a letter on the wall, presumably on the assumption that the police will assume the victim used her own blood to try to write the name of her killer. This doesn't work because Poirot, Race, and Dr. Bessner are all smart enough to know the victim would have died instantly couldn't have written anything after being shot. The only reaction it produces is a snarky comment from Poirot that killer [[YouWatchTooMuchX is apparently a fan of old-fashioned melodramas.]] [[spoiler: In a double-twist on this trope, it was written to implicate one of the people actually directly involved in the murder, in an attempt to make it look like another party was trying to frame her.]]
* DeadManWriting: [[spoiler:Subverted: The initial written by Linnet in her own blood is quickly discovered to actually have been written by the murderer (Linnet died instantly, leaving no time to write a message), seemingly to throw suspicion on Jackie. It later turns out that Jackie was actively involved in the planning of the murder and the message served to direct suspicion ''away'' from her.]]
* DeadpanSnarker: Mrs Van Schyler and Miss Bowers in the 1978 film.
* DoesThisRemindYouOfAnything: [[spoiler:A man ambitiously decides to commit murder for power and wealth, and his significant other aids him by planning how to carry it out. He pretends to be a loving protector of the victim (who is threatened by other enemies) and then kills them in their sleep, leaving a bloody mark to direct suspicion away from himself and his partner in crime. The plan starts to go wrong and the pair commit more murders to try (unsuccessfully) to get away with the first one. ''Theatre/{{Macbeth}}'', anyone?]]
* DyingClue: The J written in blood on the wall would seem to be Linnet's way of naming Jackie as the killer. Unlike most examples of this trope, this is never taken seriously as a possible clue, because it's obvious Linnet died instantly and wouldn't have had time to write anything on the wall. It's actually considered evidence in Jackie's favor, since the killer must have been the one who wrote the "J" and Jackie obviously wouldn't have done that. [[spoiler:This was exactly what the killer was counting on--Simon did the J to make it look like someone was trying to frame Jackie.]]
* EeriePaleSkinnedBrunette: Jacqueline de Bellefort
* ExoticBackdropSetting: The murder could have taken place on a ship in England, for all that native Egyptians or Egyptian culture affect the plot.
* {{Foreshadowing}}:
-->'''Colonel Race:''' ''(talking about [[spoiler:Mrs. Otterbourne]])'' What a poisonous woman! Whew! Why didn't somebody murder ''her!'' \\
'''Poirot:''' It may yet happen.
* HeKnowsTooMuch: The reason that [[spoiler:Louise Bourget and Salome Otterbourne]] were killed.
* HerrDoktor: Dr. Bessner
* HisNameIs: [[spoiler: Mrs Otterbourne is shot in the head mere seconds before she names the culprit.]]
* InnocentBlueEyes: [[spoiler: The murderer aka]] Simon Doyle has bright blue eyes.
* IWantMyBelovedToBeHappy: [[spoiler: After TheReveal, Jaqueline tells Poirot that she encouraged Simon to dump her for Linnet so that he could have Linnet's money if that was what he really wanted. However, Simon refused because he loved Jaqueline while Linnet was not his type.]]
* LadyDrunk: Mrs. Otterbourne.
* LargeHam: In the BBC Radio adaptation, Sir Donald Sinden as Colonel Race.
* LastMinuteHookUp: [[spoiler: Cornelia Robson and Dr. Bessner, Rosalie Otterbourne and Tim Allerton.]] Agatha Christie tends often to do this, with Poirot as TheMatchmaker.
* LittleUselessGun: Jacqueline's pearl-handled pistol is referred to several times as "a toy," but it's also made clear that it's a lethal weapon.
* LoveMakesYouEvil: [[spoiler:Jacqueline De Bellefort. The only reason she helped Simon in murdering Linnet is that she wanted to protect him; she knew that he'll try it alone if she doesn't help, and he'll certainly screw it up and get caught.]]
* MadLove: Jacqueline for Simon. Lampshaded by Poirot at the end.
* MommasBoy: Tim Allerton is very close with Mrs Allerton, who is a very nice woman.
* MurderSuicide: [[spoiler:Jacqueline shoots Simon and then herself.]]
* NoGuyWantsToBeChased: Simon Doyle claims this as the reason that he broke off his relationship with his fiancee Jacqueline and married Jackie's best friend Linnet. He said he was put off by the fact that Jackie loved him more than he loved her, and that "a man wants to own his woman. He doesn't want to feel that she owns him." [[spoiler: Simon was being honest about his feelings about possessive women, but it was Linnet he thought was trying to own him, not Jackie.]]
* ObfuscatingDisability: [[spoiler:Simon Doyle is ruled out because he had just been shot in the foot a few minutes before the murder and in no way could have limped all the way from the room he was in to the murder scene and back in the time he was left unwatched. In fact, he faked being shot, rushed off to kill the victim and ran back, then shot his own foot for real to keep up the ruse.]]
* OneTractMind: Mr. Ferguson, who regards any activity not tending towards the Communist utopia as fiddling {{while Rome burns}}.
* PrettyInMink: At least in an adaptation, a fur stole is used as part of the murder, [[spoiler:specifically to muffle a second gunshot]].
* PsychoExGirlfriend: ''Jacqueline''. [[spoiler: But not so much [[NewOldFlame ex]]. ]]
* RichBitch: Miss Van Schuyler
** Linnet herself may also count.
* RichSuitorPoorSuitor: Linnet and Jacqueline.
** Also Ferguson and Dr. Bessner for Cornelia Robson. [[spoiler: Though in something of a twist, it turns out that Dr. Bessner was the poor one, at least as compared to Ferguson a.k.a. Lord Dawlish.]]
* RustproofBlood: [[spoiler: Poirot finds the murder weapon (which has been chucked into the titular river) wrapped inside a cloth. The mysterious pink stain on the cloth leads Poirot to suspect that one of the passengers faked a bloody injury (using red ink hidden in a nail polish bottle) in order to create an alibi for himself.]]
* SceneryPorn: Oh dear God, yes. Legendary cinematographer Jack Cardiff and Egypt are a match made in heaven.
* ShoutOut: The 2004 version films [[spoiler: Jackie]] stabbing Louise as a homage to {{Psycho}} complete with screeching violin music.
* StagedShooting: [[spoiler:Jackie fakes shooting Simon to give him an alibi for Linnet's murder.]]
* StalkerWithACrush: Jacqueline on Simon. [[spoiler: Turns out she was pretending, and actually in cahoots with Simon.]]
* StealingFromTheTill: [[spoiler:Andrew Pennington has been doing this to Linnet, which is what provides his motive for her murder. It's also implied that Simon Doyle was doing the same thing to his previous employers, which is why he was "out of a job" when the book started.]]
* StickyFingers: [[spoiler: Miss Van Schuyler and Tim Allerton.]]
* SummationGathering: In the 1978 film (but not in the book), all the suspects were present at this, making for a suspenseful show-down scene.
* SympatheticMurderer: [[spoiler:The combination of Linnet trying to steal Simon from Jaqueline, Jaqueline's willingness to let Simon go if that was what he really wanted, and the fact that she only got involved to protect Simon, makes Jackie an extremely sympathetic figure to Poirot, Race, the other characters on the boat, and the reader. Poirot allows her to kill herself.]]
* TheSummation
* TooDumbToLive: Pretty much everyone who is killed. [[spoiler: And the murderer himself, Simon Doyle. His lover Jacqueline de Bellefort knew this and decided to help him to kill Linnet.]]
* ATragedyOfImpulsiveness: [[spoiler:If Simon had just let the rock fall on Linnet, he and Jackie would have lived happily ever after. But he reacted under instinct and pulled Linnet away. For what it is worth, this would have kept the maid Louise and Mrs. Otterbourne alive, and Pennington would have gotten Simon to sign papers to fix his crooked accounting.]]
* TriangRelations: Type 4. A = Jacqueline, B = Simon, C = Linnet [[spoiler: Actually, this is an act, and the real triangle is A = Linnet, B = Simon, C = Jacqueline, but Linnet does not know this.]]
* {{Tsundere}}: Rosalie Otterbourne, so much.
* UnreliableVoiceover: In the 1978 film, as Salome Otterbourne is saying "I was talking to one of the crew, who was showing me a most intriguing sight, a buffalo and a cow yoked together tilling the soil", a flashback is shown in which she is in fact secretly buying alcohol from said crew member.
* WeUsedToBeFriends: [[spoiler: Until you try to steal your best friend's fiancé. Linnet, you bitch.]]
* WomanScorned: Jacqueline [[spoiler: or at least that's what she wanted everyone to believe.]]
* {{Yandere}}: Jacqueline. [[spoiler: SubvertedTrope as we find out it was it was all a cover to hide her complicity with Simon. In fact, she was even ready to set her love free to marry ''her best friend''.]]
* YouWatchTooMuchX: When they find an initial over the bed written in the victim's blood, Poirot points out that this has been done so often as to be a DeadHorseTrope and essentially says that the murderer has been watching too many old-fashioned melodramas.
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