[[quoteright:196:http://static.tvtropes.org/pmwiki/pub/images/And_Then_There_Were_None_cover_6852.jpg]]
[[caption-width-right:196:A really bad weekend getaway.]]

''And Then There Were None'' is, without hyperbole, one of the most famous and popular [[MysteryFiction murder mysteries]] in history.

Creator/AgathaChristie wrote the book in 1939 and later adapted the story into a play in 1943 (with a RevisedEnding). The various [[FilmOfTheBook film versions]] (including four English-language films from 1945, 1965, 1975, and 1989) mostly use the play's ending or a variation thereof, which makes sense once you know the book's ending. A Russian film version from 1987 is the only major film adaptation to use the novel's original ending. A three-part BBC miniseries was announced for December 2015 to celebrate the 125th anniversary of Christie's birth.

The novel has had a number of different titles as a direct result of ValuesDissonance. Its original release title was ''Ten Little Niggers'', which [[ValuesDissonance was not shocking in 1930s Britain]]. In the U.S, more sensitive publishers changed the title to ''And Then There Were None''. The Soviet and the French adaptations retained the original title. The book was also published as ''Ten Little Indians'' on both sides of the Atlantic until people eventually came to see that title as racist as well. ''And Then There Were None'' has, more or less, become the official standardized title.

Whatever its title, every serious mystery fan knows the novel's plot by heart: [[TenLittleMurderVictims ten people, strangers to each other, receive invitations to an island hideaway.]] A mysterious recording played for the group accuses each person of causing another person's death. Some time after the tape is played, members of the group start dying, and each person killed is done so in ways similar to those in the "Ten Little Indians" rhyme. Those still alive come to the only possible conclusion: one of them has killed the others. Paranoia and suspicion run high as each person tries to outwit the killer; who can be trusted when everyone around them is dying?

And how long will it be before the next Little Indian dies?
-----

!!The group of ten consists of:
* Dr. Edward Armstrong, a medical doctor; he is accused of causing the death of a patient by being drunk while operating on her.
* William Henry Blore, a private investigator and former policeman; he is accused of lying in court and sending an innocent man to prison, where the man died due to frail health.
* Emily Brent, a dour and [[HolierThanThou staunchly religious]] woman; she is accused of firing her maid Beatrice and turning her out of the household when she became pregnant, which [[DrivenToSuicide drove Beatrice to suicide]].
* Vera Claythorne, a young former governess turned gym teacher and secretary; she is accused of encouraging her lover Hugo's little nephew, Cyril, to swim out to sea alone and drown so Hugo could inherit the estate of Cyril's father.
* Colonel Philip Lombard, a cool-headed and intelligent man; he is accused of causing the death of twenty-one African natives by abandoning them during his brief career as a mercenary.
* General John Macarthur, a retired World War I general; he is accused of [[MurderTheHypotenuse causing the death of his wife's lover]] by sending him on a war mission that [[TheUriahGambit guaranteed his death]].
* Anthony Marston, a handsome and vain youth with little concern for others; he is accused of accidentally and recklessly running over two children with his car.
* Thomas and Ethel Rogers, the butler and the cook charged with accommodating the other eight guests; they're accused of killing their former employer, an elderly American lady, for monetary gain.
* Judge Lawrence Wargrave, a retired HangingJudge with a no-nonsense attitude; he is accused of steering a jury into sentencing an accused murderer to death in spite of evidence supporting the accused man's innocence.

Which one of these ten hated the others so much that they would choose to kill them?

This story serves as the TropeNamer for the tropes "TenLittleMurderVictims" and "AcquittedTooLate". It is also the partial inspiration for the [[TabletopGame/{{Clue}} board game]] and film ''Film/{{Clue}}''.

The novel is in the public domain; you can read it in full on [[http://archive.org/stream/AndThenThereWereNone_726/AndThenThereWereNone_djvu.txt The Internet Archive]].

Given the age of the book, several plot points that could be considered spoilers are unmarked.

----

!! And Then There Were These Tropes:

[[foldercontrol]]

[[folder:The original book provides examples of:]]
* AcquittedTooLate: This book is the TropeNamer. Judge Wargrave remarks that only the dead are above suspicion. However, it's more of an InvokedTrope here than a straight example; once the "death proves innocence" idea takes hold, the killer fakes his own death to throw suspicion off himself.
* AssholeVictim: ''None'' of the victims is exactly an innocent, though a few [[SympatheticMurderer are sympathetic to varying degrees.]]
* AnyoneCanDie: [[spoiler:And they all do.]]
* AxCrazy: Vera and, to a lesser extent, [[spoiler:Wargrave.]]
* BigBad: U.N. Owen.
* BrainlessBeauty: Anthony Marston.
* ButForMeItWasTuesday: Marston and Lombard don't see the fact that they killed people as anything important; with the former barely remembering that he ''did'' kill anyone, as he is more concerned with having lost his driving licence as a result.
* TheButlerDidIt: Averted; Mr. Rogers is one of the first characters to be killed off. This is played straight in the backstory, as he and his wife committed the crime they were accused of.
* CallBack: Like Linnet Ridgeway in ''Literature/DeathOnTheNile'', Anthony Marston is a blithe, rich, good-looking young man who embarks on a "triumphal progress" in a flashy car. Unlike his female counterpart, Marston's blitheness had lethal consequences.
* CensoredTitle: The book was originally titled ''Ten Little Niggers''; later versions were changed to ''Ten Little Indians'' or ''And Then There Were None''. ''[[http://en.wikipedia.org/wiki/Desyat_Negrityat Desyat Negrityat]]'', the Soviet movie version, kept the original title and translated it into Russian despite being produced in 1987 (though the term is not really offensive in Russian).
** Recent versions have changed the in-world "ten little Indians" poem to "ten little soldiers". The video game changed it to "ten little sailor-boys".
** Despite the word "nègre" being as offensive as "nigger", the original title was retained in the French edition, "[[http://fr.wikipedia.org/wiki/Dix_petits_n%C3%A8gres Dix petits nègres]]"
** As far as 2015, the novel is published in Spain as "Diez Negritos" (a literal translation from "Ten Little Niggers"). A few editions have the title "Y no quedó ninguno" ("And Then There Were None") and "Diez Negritos" as a clear subtitle.
* ChekhovsGun:
** The hook on the ceiling in Vera's room is one.
** The rhyme, at least when it is first introduced, may also count.
** The marble bear clock in Vera's room that gets a brief mention near the beginning is later used to kill Blore.
* TheChessmaster: The killer is one with an elaborate GambitRoulette.
* ClosedCircle: The group of ten are trapped on an island.
* ContrivedCoincidence: The storm that ''just happened'' to show up and prevent any would-be escapee from swimming away from the island.
* CrapsaccharineWorld: The house is described as being very clean, bright, efficient, and modernist. It is all the more jarring that its guests are all guilty of horrendous crimes--and are all meeting their end in such gruesome ways.
* CryingWolf: Vera took advantage of this as a contingency in her murder plot. Her young charge had a reputation for "telling stories," so if he survived and claimed she'd encouraged him to swim that far out she could simply play innocent.
* DirtyCop: Blore lied in court about Stephen Landor because he was bribed by the real thieves. In the epilogue, Assistant Commissioner Legge says that he always considered Blore a "bad hat".
* DownerEnding: There's a reason why only the Russian movie adaptation initially used it. It was Agatha Christie's 125th birthday before an English-language adaptation tried it.
* TheDragon: Both Armstrong and Isaac Morris can be considered this to U.N. Owen, who made sure they both [[DevourTheDragon got their comeuppance]].
* DrivenToSuicide: Beatrice Taylor (Emily Brent's "victim") and Vera Claythorne both suffer from this.
** In the first movie, Emily's victim is changed to her wayward nephew.
* DrowningMySorrows: Hugo Hamilton became an alcoholic after he realized that Vera killed Cyril for him.
* DwindlingParty: The guests on the island are killed off one-by-one.
* EmpathicEnvironment: The worsening weather coincides with the worsening situation on the island.
* EverybodysDeadDave: The only character to survive the story is [[spoiler:Fred Narracott]], unless you count the policemen who appear in the epilogue.
* ExtremelyShortTimespan: The guests arrived on Indian Island on the 8th of August. According to the epilogue, a distress signal was spotted on the 11th and a rescue party was sent on the 12th.
* FingertipDrugAnalysis
* ForegoneConclusion: At first glance, the American title seems like it's trying to entice the reader by using the last line of the nursery rhyme it follows. In actuality, anyone who's read the book knows that it's actually telling you how many characters will be left at the end.
* ForTheEvulz: The killer is an unusual example: he admits that he felt compelled to murder people, but his KnightTemplar tendencies meant he believed all of his victims had to be people who ''deserved'' to die. Each of his victims had carried out murders that the law couldn't punish them for...but a vigilante killer could.
* ForgedLetter: The culprit sends a letter to all his victims under different names to trick them into meeting at Indian Island. He also sends a forged letter to himself and shows it off to make himself more convincing.
* GambitRoulette
* HairOfGoldHeartOfGold[=/=]InnocentBlueEyes: Vera and Wargrave both recall that Edward Seton, Wargrave's victim, had them. This is subverted when it turns out he only ''looked'' innocent.
* HangingJudge: Wargrave
* HauntedHeroine: Vera Claythorne
* HaveAGayOldTime: General Macarthur's thoughts on Colonel Philip Lombard: "That fellow Lombard now, he was a queer chap. Not straight. He'd swear the man wasn't straight."
* HolierThanThou: Emily Brent
* IronicNurseryTune: This was one of Christie's favourite tropes. In this book, it's central to the plot.
* {{Irony}}: [[spoiler:Only one of the guests is innocent of the crime they were accused of...and that person is the ''killer.'']]
* ItsAllAboutMe: Anthony Marston fails to understand that the death of John and Lucy Combes was not just about the inconvenience of losing his license. The killer believes Marston's excessive narcissism makes him a danger to himself and others and killing him would do everyone a favor.
* KillEmAll: When the authorities arrive, they find ten bodies.
* KnightTemplar: [[spoiler:Wargrave was a borderline psychopath, but he still retained some morals. He preferred to use the law to get what he wanted, so he targeted only those who were truly guilty.]]
* JerkassHasAPoint: When Emily Brent and Vera Claythorne are discussing Philip Lombard's guilt, the otherwise self-righteous Miss Brent is adamant that Lombard is guilty for abandoning twenty-one natives: "Black or white, they are our brothers." Vera starts ''laughing'' at this idea, though [[SanitySlippage her sanity has been fraying steadily throughout the novel]]. Her laughter also makes more sense when you consider the original title--"our black brothers" being the subject of the IronicNurseryRhyme.
* LastSurvivorSuicide: This is done twice in the same book. Vera commits suicide out of guilt during the story proper. In the epilogue, we see [[spoiler:Wargrave, who was alive at the time, commit suicide to leave a perfect puzzle. This also completes his view of justice, as he had considered himself innocent until he started killing people.]]
* LockedRoomMystery: When the police arrive, all they find are ten dead bodies on an island, each with times and manners of death that completely contradict each other.
* MeaningfulName: [[spoiler:Judge ''Wargrave'', the killer.]]
* MessageInABottle: This is discovered at the end.
* MindRape: Every single victim goes through a mild version of this thanks to U.N. Owen. The one who gets the worst of it is Vera Claythorne.
* MurderByInaction: The Rogerses are accused of having done this to their previous mistress in order to inherit from her.
* MurderSuicide: [[spoiler:Wargrave commits suicide after arranging the deaths of everyone else, as he feels himself to be no better than his victims. Besides, he's dying anyway--the story vaguely implies that he has late-stage cancer--and he wants to go out on his own terms.]]
** Vera commits suicide by hanging after shooting Lombard on the beach.
* OldDarkHouse: Averted. The story takes place in a normal, recently-built modern house. The narrator even remarks that, to some of the guests, the horror of the situation is exacerbated by everything happening in a nice modern house with no grotesque Gothic architectural features, no hidden nooks or dark corners, and nice bright electric lighting (when the generator's running).
* OneSteveLimit: There are two Edwards--Armstrong and Seton--but the former is mostly known by his surname. They both happen to be connected to Wargrave.
** Rogers and Assistant-Commissioner Legge are both Thomases.
* ThePerfectCrime
* PoeticSerialKiller: The killer uses the "Ten Little Indians" rhyme as a warning to his victims.
* PoliticallyIncorrectVillain: Lombard has no remorse about stealing from the Africans he left for dead. They "don't feel death the way Europeans do".
-->'''Macarthur''': You left them to die?
-->'''Lombard''': [[BluntYes I left them to die.]]
** And also this exchange:
-->'''Vera''': They were only natives...
-->'''Emily''': [[EvenEvilHasStandards Black or White, they are our brothers.]]
-->'''Vera''': Our Black brothers. Oh, I'm going to laugh.
* PoorCommunicationKills: [[spoiler:By the time Vera and Lombard seem to be the last living people on the island, both are strained to the breaking point by fear and paranoia. They eventually turn on one another, never considering for a moment that neither of them could have possibly killed Blore. Vera shoots Lombard on the beach with his own revolver, then hangs herself shortly afterwards, [[SelfFulfillingProphecy completing the rhyme.]]]]
* {{Pride}}: Miss Brent is consumed by it.
* PsychologicalThriller: The book has elements of this.
* ReasonableAuthorityFigure: Justice Wargrave swiftly establishes himself as this. As perhaps the most intelligent guest, he assumes decisive control of the group after it is established they are all in mortal peril. He suggests the most reasonable measures to stop the killer from catching anyone alone (everyone sits in a room together and leaves one at a time). He even has the party lock up any potential weapons they might have, from Lombard's revolver to his own sleeping medication. [[spoiler:Wargrave is also the killer.]]
** Wargrave also subverts this trope: despite being a well-spoken and intelligent man, he sentenced an innocent man to death. [[spoiler:The story subverts the subversion when it reveals that Wargrave sentenced a guilty man and was always a very reasonable judge.]]
* RedemptionEqualsDeath: Okay, "redemption" might be a strong word. But most of the guests begin to feel varying degrees of guilt about their crimes. Even Emily Brent has nightmares about the girl she drove to suicide, and Vera suffers worst of all. At the end of the story, she ''chooses'' to hang herself rather than remain alive with her guilt.
* RedHerring: This is referred to in the poem. One character points it out, but with the wrong interpretation.
* RedHerringMole: While every character is a suspect (right up until they die), the one who gains the most suspicion in the latter half of the book is Armstrong--who was only a pawn in the serial killer's game.
* ReligiousStereotype: Emily Brent
* {{Sadist}}: The group knows that the killer is screwing with their heads. In addition to all the MindRape the victims go through, the killer even kills them [[PoeticSerialKiller to mirror the nursery rhyme framed in all of their rooms]] ''[[NightmareFuel just to remind the living that they're next.]]'' [[spoiler: Wargrave claims to have been one since childhood.]]
* SerialKiller
* SerialKillerKiller: The killer is one...sort of. All of his victims were not strictly {{Serial Killer}}s, but guilty of a single murder or manslaughter.
* ShoutOut: The book actually contains an obscure one. Vera Claythorne mentions a story in which two Supreme Court judges come to an American town and administer justice--but they aren't really from this world at all. The reference is to ''The New Administration'' by Melville Davisson Post.
* SignificantMonogram: U. N. Owen is discovered to be a SueDonym, standing for "Unknown".
* SociopathicHero: Philip Lombard is one, to a degree.
** [[spoiler:Wargrave also counts; he describes himself as someone who ''likes'' killing and inflicting pain, but only does so to those he believes are deserving of it by law.]]
* SortingAlgorithmOfEvil: This is how the killer sees the killings. He killed killers; his victims, not so much.
* TenLittleMurderVictims: This is the TropeNamer.
* ThanatosGambit: [[spoiler:Judge Wargrave either kills all of the others on the island or [[DrivenToSuicide drives them to kill themselves]] and others, then commits suicide in a manner that the police could confuse for a murder. He does it for three reasons: he wants to confuse the hell out of the investigating police, punish his victims for causing the deaths of others and getting away with it, and avoid a death caused by a painful illness.]]
* ThemeSerialKiller: The victim's deaths were patterned after the "Ten Little Indians" rhyme.
* TheBadGuyWins: Well it ain't called ''[[MeaningfulName And Then There Were None]]'' for nothin'. The killer pulls his plan off so well that the police can't figure out what happened.
* TooDumbToLive: Armstrong is oh-so-very this. He goes along with [[spoiler:Wargrave's scheme to fake his own death in order to safely stalk the real murderer, then allies with Wargrave--all without realizing that the killer seeing a victim that is obviously not his might get suspicious.]] At that point of the story, the characters could get desperate and not think very rationally, but that one was taking it too far.
** This is semi-justified by the fact that Armstrong [[spoiler:once testified at a trial where Wargrave was presiding. Armstrong knows Wargrave is a real judge and Wargrave knows Armstrong is a real doctor (late in the book, the others suspect Armstrong isn't a doctor). In Armstrong's mind, anyone as respectable as himself and Wargrave couldn't possibly be the killer.]]
* TwistEnding: The book is renowned for its mindfuck ending. The killer is [[spoiler:[[ThanatosGambit someone you thought died four victims ago.]]]] It also ends in EverybodysDeadDave; [[MeaningfulName given the modern title]], this is probably a ForegoneConclusion.
* UnableToSupportAWife: Hugo Hamilton had told Vera that he couldn't ask her to marry him because he hadn't a penny to his name. That confession motivated Vera to do away with the boy who stood between Hugo and a huge inheritance.
* UpperClassTwit: Anthony Marston
* UriahGambit: This was [=MacArthur=]'s method of killing his wife Leslie's lover. The story mentions that after his successful gambit, [=MacArthur=] always skipped church when Uriah's story was scheduled to be read.
* {{UST}}: There is a hint of this between Lombard and Vera, though the story never really explores it.
* VigilanteExecution
* VigilanteMan: U. N. Owen
* WhyDidItHaveToBeSnakes: Or wasps and bees, in Miss Brent's case.
* WouldHurtAChild: Vera Claythorne
* WouldntHitAGirl: This is played straight with Philip Lombard and Vera Claythorne. [[spoiler:She shoots him to death anyway.]]
[[/folder]]

[[folder:The various adaptations of this book provide examples of:]]
* AdaptationalHeroism: Christie's stage adaptation, which most of the film versions follow, has two of the ten characters [[spoiler:discover their innocence, survive, and fall in love. Those two characters are the two whom the murderer considered the most guilty and saved for last.]]
** The Russian adaptation leaves out [[spoiler:Wargrave's obsession with murder and paints him as more of a vigilante who got fed up with the corrupt judicial system and decided to stage a "perfect trial": "No two-faced [[AmoralAttorney sell-outs of lawyers]], no ridiculous capes or wigs--just the judge face to face with the accused, and the criminal with his executioner."]]
** The BBC adaptation turn Morris from a shady drug dealer to the owner of an employment agency.
* AdaptationalVillainy: [[spoiler:Hugh Hamilton]] falls under this in the stage version, as [[spoiler:he, not Vera, got his young nephew killed]]. This version doesn't go into how the victims were selected, but if it happened anything like the book--in which [[spoiler:Wargrave learned about Cyril's murder from a drunken and melancholic Hugh]]--then [[spoiler:he also blamed Vera, who he supposedly loved, for his own crime]].
** Several characters in the 2015 BBC adaptation are hit hard by this:
*** Rogers is seen abusing his wife and instead of simply withholding the medicine for his elderly employer, [[VorpalPillow he smothers her with a pillow]]
*** Blore and Macarthur, rather than simply sending their victims to a guaranteed death, are both shown to have actively murdered their respective victims [[spoiler: with Blore beating his victim to death and Macarthur shooting his wife's lover in the back of the head.]]
*** Lombard changes from a man who abandoned his followers to starve in the name of self-preservation to one who [[spoiler:burned a village to steal diamonds]].
** The video game introduces a subplot exposing [[spoiler: Anthony Marston]] as a Nazi spy. The character is dead by the time this is discovered, so is never confronted about this additional offense.
* AdaptationNameChange:
** General [=MacArthur=] becomes General [=MacKenzie=] in the stage play, in order to disassociate him from a real life General [=MacArthur=] who was a key figure in the Allied forces at the time of the play's release during WWII.
** In the BBC adaption, Arthur Richmond becomes Henry Richmond; James Landor becomes Edward Landor.
* AdaptedOut: Even adaptations that keep the original ending do not use the epilogue, so Sir Thomas Legge and Inspector Maine have yet to be played by anybody.
* ArtisticLicenceBiology: In the 2015 adaptation, Blore casually calls Lombard aside and asks him to confirm by smell that Marston died by cyanide poisoning. Given that the ability to smell cyanide is genetic and only shared by 40% of the population, it's more likely than not that Lombard wouldn't have been able to confirm this.
* AscendedExtra: Fred Narracott, the boatman [[spoiler:and sole surviving named character]] in the novel, is the protagonist of the video game adaptation.
* BeeBeeGun: The game decides to take the "playing with a hive" verse more literally by actually including an apiary on the island. This apiary comes along with an optional honey-collecting side quest. It's also used to dispatch [[spoiler: Miss Brent]].
** Of the deaths in the game, [[spoiler:Miss Brent's is the first to be drastically changed from the original, which is a hint that she has faked her death and is really the killer]].
* BetterToDieThanBeKilled: In most of of the film versions, [[spoiler:the killer tries to persuade Vera to hang herself, as "the only survivor found on an island with nine corpses will certainly be hanged. Take a piece of friendly advice; do it now, privately." What he doesn't know is that Lombard is still alive.]]
* BlackComedy: The 1945 film in particular is ''loaded'' with this. Rogers reacts to the accusation that he poisoned the cocktails by indignantly drinking all of them; he then serves dinner drunk.
** In the 2015 adaptation:
--> '''Vera''': Has Mrs. Rogers got worse?
--> '''Armstrong''': Somewhat - she's dead.
* BloodFromTheMouth: Marston, very copiously and gorily, when he dies in the 2015 BBC adaptation.
* BloodierAndGorier: The 2015 BBC adaptation in ''spades'' - not only are the deaths more bloody, but several characters have hallucinations and dreams that expose their crimes in gruesome detail, particularly [[spoiler: Armstrong's nightmare]].
* BreakingTheFourthWall: After the guests arrive at the island, four of the characters introduce themselves to each other, and all look straight at the camera when they do it. Later, Blore looks straight at the camera and says "I get it!" right before his head is caved in by a falling turret.
* ChekhovsGun: Lombard has a bag with a different set of initials when he arrives.
* CuteKitten: A housecat turns up in the 1945 and 1965 films.
* DarkerAndEdgier: The 1987 Russian version qualifies compared to the other film versions. The first victim ''crashes through a plate and gets the glass stuck in the face'', and the {{UST}} between Vera and Lombard culminates in [[spoiler:him ''raping'' her.]]
** The 2015 BBC adaptation goes for this to some extent; including scenes such as Marston taking cocaine, Rogers beating his wife, gorier deaths than those described in the book, and very brutal flashbacks to the murders committed by each victim. An to top all that, all but one of the indirect deaths caused by the guests in the novels are turned into straight up murders committed by their own hands.
* DeadPersonImpersonation: A plot twist exclusive to several of the movie versions reveals [[spoiler:"Philip Lombard" is really Charles Morley, who came in Lombard's place. The real Lombard committed suicide upon receiving U.N. Owen's letter.]]
* DisneyDeath: [[spoiler:Lombard]] has one in the 1943 play and the 1989 film.
* DramaticThunder: The 1945 film has a dramatic clap of thunder sound right after the doctor confirms that the third victim was murdered. There's another instance of dramatic thunder right after Judge Wargrave says that the murderer must be one of them.
* DullSurprise: A large share of the game's voice acting falls into this territory, which does take away from the whole "psychological horror" aspect the story is meant to have later on.
* ExactWords: In the 1945 film, Lombard is asked about the accusation that he left 21 natives in his unit to die. He says, "Mr. Lombard is unable to deny a thing." [[spoiler:That's because the real Mr. Lombard isn't there.]]
* FailedASpotCheck: In the 1945 film, two characters argue about whether Rogers is the killer, while dead Rogers' shoes are visible in the foreground of the shot, just a few yards away and in plain view.
* {{Fanservice}}: In the 1965 adaptation, Shirley Eaton (Vera) gets quite a few scenes in her underwear and at least one [[ModestyTowel modesty towel.]] In the Russian version, Vera also gets a scene in her black underwear, [[spoiler:which is followed by a [[ToplessnessFromTheBack bare back shot minutes later with Lombard...]] [[FanDisservice as he begins to rape her. Er, yeah...]]]]
** The 2015 adaption makes liberal use of Vera in a very tight red swimsuit, and has Lombard walk around in just a towel during all the searches while the other guests wear dressing gowns.
* FirstNameBasis: In the play, Vera gradually starts referring to Lombard as "Philip".
* FlashbackNightmare: Armstrong has one in the 2015 adaptation.
* GettingCrapPastTheRadar: In the play, Emily Brent makes various comments on Vera Claythorne not wanting to appear flashy to her hostess--right before making a nasty comment on how tight her dress appears (with Vera, of course, being [[NaiveEverygirl utterly naive]] as to what she ''really'' means). There are also the various instances of Lombard flirting with Vera, which include Lombard's line about being regretful he and Vera did not wake up at the same time because they could've gone down to the ocean to "have a bathe" together.
* HopeSpot: In the 2015 TV adaptation, U. N. Owen gives one to the last victim: [[spoiler:She's trapped in the noose, struggling for balance on an overturned chair, when he arrives. She tries to convince him to spare her. He compliments her, tells her she's his favourite... and then pulls the chair away.]]
* HotterAndSexier: The 1965 version changed the elderly spinster character to a glamorous young actress, solely to allow another beautiful woman to be cast (a change that would be retained in the 1975 and 1989 versions). It was also the first adaptation of a Christie work to contain a sex scene (which had not been present in the original novel). Christie was not pleased. The 2015 TV adaptation also amped up the sex, but rather than change the spinster to a hot actress, they cast current TV sex god AidanTurner as Lombard.
* LargeHam: ''Every'' actor who has portrayed the Anthony Marston equivalent in the Hollywood adaptations gets to be one. Mischa Auer in particular is often considered the worst offender.
* LighterAndSofter: The play and 1945 movie version fall under this, as do the Harry Alan Towers adaptations.
* LimitedWardrobe: This is justified in the game with Patrick, as he did not expect to be stranded on the island, but played straight with the other guests.
** A particularly jarring example occurs later in the game during a cut scene, and what follows afterwards. The remaining few guests didn't even bother packing pajamas.
* MiscarriageOfJustice: In Christie's own theatrical adaptation and many of the following adaptations, the murderer's plan unintentionally involves this, as [[spoiler:two of the nine characters he sees as guilty of murder are actually innocent. They both survive and avert the trope.]]
* ObfuscatingDisability: Some stage versions place [[spoiler:Wargrave]] in a wheelchair, leading to a dramatic reveal of the murderer, possibly as an obscure reference to [[spoiler:[[Theatre/TheMousetrap another famous Agatha Christie show]]]].
* OnlyTheLeadsGetAHappyEnding
* PetTheDog: In the stage version, Vera shows more sympathy toward Rogers after the death of his wife by defending his seemingly unemotional behavior to a suspicious Blore and chasing after him to offer him coffee. This foreshadows that [[spoiler:she is actually innocent]].
* PoliticallyIncorrectVillain: Emily Brent in the 2015 adaptation in relation to Isaac Morris.
-->'''Miss Brent''': Jews. Wherever there's a problem, Jews are at the bottom of it.
** it's blink-and-you'll-miss-it, but in the 2015 series Blore is shown going over the list of guests he's been given in his letter. He writes 'Fenian' next to Phillip Lombard's name, and at one point (can't remember the exact quote, sorry) claims that Lombard's the obvious suspect because he's Irish, and out to kill all English. Probably, a PragmaticAdaptation / RealLifeWritesThePlot due to Aiden Turner being Irish.
** In the Russian adaptation it's Vera who's callously lenient towards Lombart's crime (abandoning two dozen native Africans to their deaths), because "Well, they were only negroes", and it's ''Emily'' who retorts that: "Black or white, they're our brothers."
* PsychoLesbian: The 1989 film adaptation had Emily Brent replaced by Marion (Brenda Vaccaro), [[spoiler:an actress who killed her lesbian lover when she started blackmailing her.]]
** The 2015 BBC adaptation implies that Emily had feelings for Beatrice (who in this version is shown to have been underage), and dismissed her out of jealousy when Beatrice became pregnant.
* PsychologicalThriller: The Russian movie version expands on the elements already present in the book--[[AdaptationDistillation and it works very, very well.]]
** Also done in the 2015 BBC adaptation.
* RevisedEnding: When Creator/AgathaChristie adapted her own novel for the stage, she didn't think the ending was dramatically satisfying for the stage. She altered the ending so [[spoiler:the novel's most sympathetic characters proved their innocence, survived, and fell in love]]. The 1945 film altered that ending by introducing [[spoiler:Charles Morley, who came to the island ''impersonating'' his friend Lombard to find out why he'd killed himself after receiving U.N. Owen's letter]]. These two variations on the [[spoiler:happy]] ending were used for nearly all the adaptations. The Russian film version, the 2015 TV version and Kevin Elyot's 2005 stage adaptation avert this by keeping the novel's original ending.
* RightHandCat: In the 1945 and 1965 films, [[spoiler:the Judge holds and strokes the house cat while explaining his scheme to Vera.]]
* SerialKillerKiller: In the 2015 TV series, [[spoiler:Wargrave]] is a literal one in the backstory, as [[spoiler: Edward Seton undergoes AdaptationalVillainy to become genuine serial killer]].
* ShipTease: The film adaptations--especially the 1965 one--crank up the {{UST}} between Lombard and Vera into a full-fledged relationship.
* SlapSlapKiss: Vera and Lombard (or Morley, depending on the adaptation) get into this.
* SlasherMovie: "And Then There Were None" is often considered the ur-text of the genre, and its film adaptations among the earliest examples.
* SleepingSingle: The Rogerses' beds in the game are arranged this way. This was probably more of a practical decision, considering how [[spoiler:one bed is needed to host each of their corpses]].
** In the original story, Rogers moves to a new room once his wife dies. In the game, he remains in the same one here, leading [[FridgeHorror to the implication that he had to spend a night sleeping in the same room as his dead wife]].
*** the BBC adaptation has the group bursting into Marsters' room to find Rogers all but under the bed. When questioned (at gunpoint, mind) Rogers brings out a folded-up camp-bed. They'd stored it under Marsters' bed originally, because 'young gentlemen never look under the beds'; he intended to use it in a spare room. Given how he treated his wife during the brief time we see her alive, it's possible that Ethel insisted on separate beds. Or even that it was simply the only below-stairs bedroom with enough bed/s for two people. (Wargrave didn't want two of his killers/victims to have easy access for hanky-panky??)
* SparedByTheAdaptation: [[spoiler:Vera is spared in the play and all but one of the English language films. Lombard is spared in the play and the 1965 and 1989 films. (The adaptations featuring Charles Morley avert the sparing of Lombard; he commited suicide before the story began.)]]
* TheVoice: An uncredited Creator/ChristopherLee provides the tape-recorded voice of "U. N. Owen" in the 1965 film.
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