A 1940s whodunnit based on the novel by Ngaio Marsh. When an artists model is murdered in front of the whole class, Inspector Alleyn is sent to investigate.

In spring 1948, Alleyn joins a party where he is left to investigate the connection between the theft of a priceless chalice and a game of murder that goes horribly wrong.

A prominent cabinet minister dies as the result of an operation, his wife insists that he was murdered. Alleyn is called in to investigate the nursing home where he died.

When a grand old man of the theatre announces that he is to marry a young and glamorous beauty, someone in his family reacts violently to being disinherited.

A man's death defies explanation after he's struck in the hand during a game of darts.

Alleyn recruits Lord Robert on his quest to identify a blackmailer, but after Lord Robert is killed, a hunt begins for a murderer.