The Crimson Key (1947)

Jane Marple solves the mystery when a local woman is poisoned and a visiting movie star seems to have been the intended victim.

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.

Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple identities, Alexandra can't prove anything with conventional detective work. With no other option, she goes undercover, pursuing the same man as Catherine, and hoping that Catherine will slip up and reveal her true identity.

A falsely convicted man's wife, Catherine, and an alcoholic composer and pianist, Martin, team up in an attempt to clear her husband of the murder of a blonde singer, who is Martin's wife.

In the small resort town of Lighthouse Cove, everyone knows that the best man for the job is a woman. And that woman is Shannon Hughes, owner of a construction company and an expert in Victorian home restoration and renovation. Through her renovations she will find clues to uncover the house’s secret past and in turn become an unlikely sleuth to help crack these unsolved mysteries

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

After a former model is drowned in her bathtub, Detective James Halloran and Lieutenant Dan Muldoon attempt to piece together her murder.

A sister and her disturbed twin are implicated in a murder and a police detective must figure out which one's the killer.

A troubled young woman becomes obsessed with her mysterious new neighbor, who bears a striking resemblance to the girl's dead mother.

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.