History YMMV / TheABCMurders

* HarsherInHindsight: The killer sends taunting letters announcing the dates in which he is going to kill someone. One letter announces his next killing will be on ''September 11th''! Hastings even says that, "I shall, I think, remember that 11th of September all my life. Indeed, whenever I see a mention of the St. Leger my mind flies automatically not to horse-racing but to murder."

* CastingGag: Two retroactive examples:
** Creator/ShirleyHenderson, who plays Rose Marbury, would go on to play Creator/AgathaChristie herself in ''Film/SeeHowTheyRun''.
** Creator/HenryGoodman has a minor role as Mr. Prynne. In 2022, he played Poirot in a stage production of ''Literature/MurderOnTheOrientExpress''.

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a fairly ordinary white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable.

** Creator/HenryGoodman has a minor role as Mr. Prynne. In 2022, he played Poirot himself in a stage production of ''Literature/MurderOnTheOrientExpress''.

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a fairly ordinary white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable.

* HoYay: In the BBC adaptation, [[spoiler:Franklin's]] final speech to Poirot feels like this throughout, but when he gets to the ending section it positively ''reeks'' of HoYay, with the ending being [[spoiler:Franklin]] ''caressing Poirot's scar and saying he's going to miss him''.
* TheyChangedItNowItSucks: The general reaction to the 2018 BBC adaption, which makes a lot of changes to the material for the sake of being DarkerAndEdgier which are unnecessary like getting rid of Inspector Japp and Captain Hastings and makes it so bleak it's almost unwatchable. And that's not even getting into the replacement of Poirot's iconic moustaches, with a generic looking goatee beard. Between this, and his AdaptationalPersonalityChange, there's little of the original character left at all.

* HarsherInHindsight: The killer sends taunting letters announcing the dates in which he is going to kill someone. One letter announces his next killing will be on ''September 11th''! Hastings even says that, "From now on the date September 11th will always mean a day of murder to me." Yeah, that's true of pretty much everybody now, Hastings.

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a fairly ordinary white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable. Between this, and his AdaptationalPersonalityChange, there's little of Poirot to recognise here.

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a fairly ordinary white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable. Between this, and his AdaptationalPersonalityChange

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a fairly ordinary white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable.

* TheyChangedItNowItSucks: The general reaction to the 2018 BBC adaption, which makes a lot of changes to the material for the sake of being DarkerAndEdgier which are unnecessary like getting rid of Inspector Japp and Captain Hastings and makes it so bleak it's almost unwatchable. And that's not even getting into the replacement of Poirot's iconic moustaches, with a generic looking goatee beard.

* AbilityOverAppearance: Franchise/HerculePoirot is described in the books as 5'4", black-haired, plump, and sporting a pair of meticulously styled moustaches. Creator/JohnMalkovich is 5'11", bald, thin, and wears a white goatee beard, although he briefly dyes it black. Onscreen, Poirot's clothing style is quite bland and understated. His literary counterpart dresses more stylishly, and is always neat and impeccable.

* TheyChangedItNowItSucks: The general reaction to the 2018 BBC adaption, which makes a lot of changes to the material for the sake of being DarkerAndEdgier which are unnecessary like getting rid of Inspector Japp and Captain Hastings and makes it so bleak it's almost unwatchable.