Small-time jewel thief Leo Martin is deserted by his partners-in-crime, club owner Gus Loman and driver Hatchett, when the robbery they are committing goes wrong. After serving his prison sentence, Leo emerges with an intricate plan for revenge. Leo implicates Loman, as well as his amoral boss, Gregory Lang, for murder -- but Inspector Rogers suspects Leo.

Opposing ends of a pantomime horse where the 'head' dates a society lady while the 'tail' is unhappily married.

Detective Sexton Blake takes on Nazi spies while solving a series of crimes.