So Dark the Night (1946)

At the insistence of Ruth Van Rydock, an old schoolfriend who is convinced that there is something wrong, Miss Marple agrees to visit 'Stonygates', the country house of Ruth's sister.

In Acapulco, Hercule Poirot attends a dinner party in which one of the guests clutches his throat and suddenly dies. The causes seem to be natural until another party with most of the same guests produces another corpse.

Private eye Phillip Marlowe wants to get out of the detective racket and into crime writing. But when he's called to the office of editor Adrienne Fromsett, it's not to talk about his story ideas — she wants him to locate the missing wife of her boss, Mr. Kingsby. The assignment quickly becomes complicated when bodies start turning up.

Upon waking up to the news that the man she’d gone on a date with the previous night has been murdered, a young woman with only a faint memory of the night’s events begins to suspect that she murdered him while attempting to resist his advances.

Not even the joys of parenthood can stop married sleuths Nick and Nora Charles from investigating a murder on a Long Island estate.

Miss Marple believes she's seen a murder in a passing-by train, yet when the police find no evidence she decides to investigate it on her own.

A police detective falls in love with the woman whose murder he's investigating.

After an innocent man is executed in a case he was responsible for, a Scotland Yard superintendent finds himself investigating the murder of his key witness.

P.C. George Dixon is a long-serving traditional copper who is due to retire shortly. He takes a new recruit under his aegis and introduces him to the easy-going night beat. Dixon is a classic ordinary hero but also anachronistic, unprepared and unable to answer the violence of the 1950s.

Society sleuths Nick and Nora Charles investigate a murder in a jazz club.