TL;DR – A delightful romp through post-WW2 London as a murder reaches into the heights of polite society.
Post-Credit Scene – There is no post-credit scene
Disclosure – I paid for the Disney+ service that viewed the film.

See How They Run Review –
We are seeing a resurgence of the Murder Mystery on our screens, which I have generally found to be an absolute delight. We have witnessed straight adaptations like Murder on the Orient Express, musical romps like The Bob’s Burgers Movie, and genre deconstructions like Knives Out. Today we’ll look at a film that is a lover of the genre and dances with a light touch while delving into some delightful meta-commentary.
So to set the scene, we open on London’s West End in 1953, where Agatha Christie’s Mousetrap is playing its 100th performance. Hollywood has tasked Leo Köpernick (Adrien Brody) to create a film adaptation of this dull play. After flirting with the star of the show Richard Attenborough’s (Harris Dickinson) wife, Sheila Sim (Pearl Chanda), Leo ends up backstage, where he is brutally murdered by someone dressed in black. But as Leo states as the narrator, it is always the most unlikeable characters that get bumped off. Now Inspector Stoppard (Sam Rockwell) and Constable Stalker (Saoirse Ronan) are on the case, but as Leo laments, if you have seen one Whodunit, you have seen them all.