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''Five Little Pigs'' is a 1942 mystery novel by Creator/AgathaChristie. (For many years, American editions were published under the title ''Murder in Retrospect.'')

Sixteen years ago, Caroline Crale was convicted of the murder of her husband, the painter Amyas Crale. Their daughter approaches Literature/HerculePoirot to investigate the case. Poirot visits the five people present at the time of the murder, and each of them gives [[RashomonStyle a slightly different story]].

The story was featured in the ninth series of ''Series/{{Poirot}}'' in 2003. Tropes concerning the TV adaptation are listed on the series page.

!!This detective mystery provides examples of:
* AmIJustAToyToYou: Thought to be part of Caroline's motive. [[spoiler: Actually Elsa's.]]
* AmbiguouslyGay: Miss Williams is an old maid who takes DoesNotLikeMen to the hardcore and sees Caroline as a saintly martyr to one of that filthy kind. To the more modern reader, it may look like she had been attracted to Caroline.
* AssholeVictim: Possibly subverted. Several characters sided with Caroline Crale when she was convicted of murdering her husband Amyas, since he was having an affair with his model - one of many. [[spoiler:It turns out he never intended to leave Caroline, and he was murdered by said model. It depends on the reader whether you think that the fact that he never intended to leave Caroline is enough to get Amyas out of the "Asshole" category, or if you think he was still an asshole for having an affair and letting Elsa think he loved her enough to leave his wife.]]
* TheAtoner: Caroline Crale is continually haunted by the injury she inflicted on Angela, and in her attempts to make up for it, spoils her rotten. [[spoiler:Caroline sees her opportunity for redemption by taking the blame for what she thought was Angela's crime.]]
* AwLookTheyReallyDoLoveEachOther: Amyas has frequent flings with the models he painted, but never takes his relationship with them seriously, and is actually devoted to his wife.
* BettyAndVeronica: Amyas Crale stands in the middle between his long-suffering wife, Caroline and his young, but glamorous, new model, Elsa.
* BigSisterInstinct: Caroline did everything she could to take care of Angela, [[spoiler:including erasing Angela's fingerprints from a beer bottle to keep her from being charged for murder.]]
* BrutalHonesty: Caroline Crale believed in this, at least according to her daughter. The reason that Carla believes her mother is innocent is because Caroline sent her a letter saying so, and Caroline never told her daughter comforting lies.
* ClearTheirName: The daughter wants to prove that her mother was innocent.
* ClingyJealousGirl: Gender-inverted with Amyas. The infamous rows between the couple were mostly not caused because of Amyas' frequent flings with other women, but because he was jealous that Caroline seemed to prioritise her sister Angela over him.
* DeathByWomanScorned: Amyas' womanising ways eventually got him murdered. [[spoiler:Elsa, one of his lovers, genuinely believed his claims when he told her that he would leave his wife for her. Then she overheard the truth, got her heart broken, and killed Amyas in revenge.]]
* DoesNotLikeMen: Miss Williams. Years of observing the womanizing Amyas probably didn't help.
* DontYouDarePityMe: [[spoiler:Elsa made Caroline the scapegoat for the murder not only out of jealousy, but also because she was furious when she heard Caroline calling out Amyas for the cruel treatment of her (Elsa)]].
* DoomedMoralVictor: While no one really believes that Caroline was innocent except for her daughter and her sister, many of the onlookers note that the way she accepted her fate was really quite impressive. [[spoiler: And she turns out to actually be this for Elsa, the real murderer; while Caroline ended up taking the fall for Elsa's crime, and Elsa herself goes on to marry into wealth and fame, the brave and dignified way she meets her fate serves to rob Elsa of any satisfaction she might have gained from seeing Caroline go down, and all the wealth and fame in the world don't end up making Elsa happy in the slightest.]]
* EarWorm: Poirot just can't get the "This Little Piggy" nursery rhyme out of his head - which in the end structures the whole book, both InUniverse and on meta-level, including the title of the novel (the latter being quite a typical Christie feat).
* EasilyForgiven: [[spoiler: Amyas has had several affairs, but since he truly loves (or ''claims'' he loves) only Caroline, she accepts them and feels more sorry for the 'other woman' in the equation.]]
* ExactWords: Caroline is overheard fuming about the unfairness of the situation. [[spoiler:She is not mad that her husband has fallen for yet another model, but that he is going to break the ''model's'' heart.]] The key phrase is, "You and your women!" [[spoiler:In the Summation Poirot notes the plural, implying there is nothing special to Amyas about this latest woman, Elsa, after all.]]
* GenderBlenderName: When this novel was written and originally published, "Meredith" was still an exclusively male name; it wasn't until very late in the twentieth century that it lost this status, and became mainly a girls' name.
* GoOutWithASmile: Caroline finally found the peace she had never enjoyed, after [[spoiler:finally atoning for Angela's disfigurement by taking the blame for what she thought was Angela's crime.]]
* HeroicSacrifice: Played with: [[spoiler: Caroline Crayle ''thinks'' that she's doing this to spare Angela from prosecution for murder and to [[TheAtoner atone]] for blinding her as a child, but as it turns out Angela is completely innocent and Caroline's sacrifice is needless. However, the peace and courage Caroline derives from what she thinks is this trope ironically serves to thwart Elsa by depriving her of any satisfaction she might have received from seeing her romantic rival be punished for her crime.]]
* HeterosexualLifePartners: Philip Blake is Amyas's steadfast companion, to whom Amyas would confide in whenever he has rows with his wife.
* HiddenDepths: Meredith Blake discusses this trope in his personal recollection of the Crale Case by saying that people usually have hidden sides that no-one knows about. This is the reason why he believes that Amyas ''could'' have committed suicide, even though it would seem very out-of-character for him to do so. [[spoiler: Of course, it also foreshadows Meredith's own deep secret, which is that he grew to like Elsa much more than everyone else and proposed to her after the court hearing that convicted Caroline.]]
* IfICantHaveYou: Amyas is constantly having flings with numerous girls, and was apparently about to leave his wife and marry his latest model, Elsa Greer. This incident eventually leads to his being murdered. [[spoiler: In actual fact he wasn't going to leave Caroline at all but dump Elsa, since Caroline's the only one he really loves. Elsa overhears this, and ''she's'' the one who adopts this trope.]]
* IronicNurseryTune: The five suspects matches the five little pigs in the nursery rhyme ‘This Little Piggy’:
-->“This little piggy went to market. (Philip Blake)
-->This little piggy stayed at home. (Meredith Blake)
-->This little piggy had roast beef. (Elsa Greer)
-->This little piggy had none. (Cecilia Williams)
-->And this little piggy went "Wee! Wee! Wee!" all the way home. (Angela Warren)”
* ItsAllAboutMe: By everyone's account, Amyas was a raging egomaniac. Elsa has shades of this as well, and is quite open about it.
* ItsForABook: When speaking with some of the witnesses, Poirot claims he is writing a book about famous murders.
* KarmaHoudini: Downplayed. Poirot admits to the killer he has no physical evidence to prove their guilt and they won't publicly confess to it. However, they don't get away consequence-free: [[spoiler:Elsa Greer has never been able to move on from the day she murdered the only man she ever loved. She lives a wealthy but utterly joyless and miserable life. As she puts it [[FateWorseThanDeath "I died that day."]]]]
* LateToThePunchline: Angela mentions having one of these moments, where she actually said aloud "Oh! Now I get the point of that [[NoodleIncident story about the plum pudding]]." This led her to recount a similar incident where she realized the significance of something she observed the weekend of the murder.
* LivingLieDetector: Miss Williams to a degree. When she was a governess, none of the kids even tried to lie to her, feeling that it would be pointless. Poirot, at first, tells to other people that he is writing a book about the case, but he tells the truth to Miss Williams right away.
* MarketBasedTitle: It was originally published in the US as ''Murder in Retrospect''. Later publications restored the original British title.
* MustMakeAmends: Caroline never stops trying to make up for her sister's injury, but as a result spoils her rotten.
* NiceJobBreakingItHero: Both Caroline and Miss Williams tried to protect someone in the name of what they thought was justice, but their lies caused the actual murderer, whom neither of them would want to shield, to get away with what they had done.
* ParentsAsPeople: Lampshaded by Poirot when he finds strange that every witness seems to forget that the murder victim has a baby daughter: Miss Williams as the governess discusses it when she explains that middle class children know that their parents love them but are too busy providing for them to pay attention; the love between the affluent murder victim and his wife was so intense that the baby could never have been their first concern.
* RashomonStyle: Poirot pieces together what actually happened by hearing the differing accounts of the five main witnesses to the crime. These accounts differ due to the tellers both not having the full perspective on what happened and due to them frequently [[UnreliableNarrator concealing information for their own purposes]].
* SlapSlapKiss: Amyas and Caroline, constantly. Amyas had affairs and he had very nasty fights with Caroline, but despite this, they were very much in love. According to Angela, they actually enjoyed fighting, and would've found life boring without it. [[spoiler: Amyas never considered leaving Caroline, and she always forgave him.]]
* SympatheticAdulterer: Amyas seems to be portrayed in that way by the narration [[spoiler:and in the end it's confirmed]], though not all of the characters see him that way.
* TakingTheHeat: [[spoiler:Caroline believes that Angela poisoned Amyas (perhaps by accident, just meaning to make him sick). Since she believes that she still owes Angela for injuring her when they were kids, she lets suspicion fall on herself instead and ends up being jailed for Amyas' murder.]]
* UnreliableNarrator: Each guest's account of the events leading up to the death of Amyas Crale is tainted by their own prejudices, things they want to keep hidden, or things they've simply forgotten or don't realize the significance of. For example, one guest casually remarks to Poirot about a minor prank that was once played on Amyas, only to later realize in shock that it was actually something that has occurred on the day of his death and which holds greater significance than anyone could have thought.
* UnrequitedLoveLastsForever:
** Both the Blake brothers were in love with Caroline, and neither ever marries, even after her death. [[spoiler: And Meredith has grown to harbour the same feelings for Elsa.]]
** Another possible example is [[spoiler: Elsa, who still seems to be in love with Amyas Crayle even after he rejected her and she murdered him]].
* WhamLine: From Poirot: [[spoiler:"We have taken it for granted that Amyas Crale proposed to leave his wife for the other woman. But I suggest to you now that he never intended to do anything of the kind."]]
* WomanScorned:
** Gender-flipped with [[spoiler: Philip Blake, who wanted to make Caroline look as black as possible at least partially because she rejected him when they were young]].
** [[spoiler: Played straight with Elsa Greer, who not only murders Amyas when she learns he never planned to leave his wife for her and was only using her; she also frames the woman he really loves, Caroline.]]
* YourCheatingHeart: Amyas Crale had a lot of affairs, despite being married. [[spoiler:However, he only really loved his wife; the rest of the women meant nothing to him. ''Including Elsa.'']]