The Argyle Case (1917)

A private investigator helps a former flame solve the murder of her wealthy grandfather, who lived in a sprawling estate surrounded by his idiosyncratic family.

During a murder hunt game at a country house, to which Hercule Poirot is invited as an "expert", a real murder occurs.

A crooked politician finds himself being accused of murder by a gangster from whom he refused help during a re-election campaign.

Over-the-hill gumshoe in Los Angeles seeks to avenge the killing of an old pal, another detective who was involved in a case concerning a murdered broad, stolen stamps, a nickel-plated handgun, a cheating dolly, and a kidnapped pussycat.

Mysterious Orfamay Quest hires Los Angeles private investigator Philip Marlowe to find her missing brother. Though the job seems simple enough, it leads Marlowe into the underbelly of the city, turning up leads who are murdered with ice picks, exotic dancers, blackmailed television stars, and self-preserving gangsters. Soon, Marlowe's life is on the line right along with his case.

Travelling on the 4.50 from Paddington, Mrs McGillicuddy witnesses a murder on a passing train - but where is the body?

A young promoter is accused of the murder of Vicky Lynn, a young actress he "discovered" as a waitress while out with ex-actor Robin Ray and gossip columnist Larry Evans.

When notorious criminal Jacob Sternwood is forced to return to London, it gives detective Max Lewinsky one last chance to take down the man he's always been after.

Faced with two false confessions and numerous suspects after a despised civil magistrate is found shot in the local vicarage, Detective Inspector Slack reluctantly accepts help from Miss Marple.

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.