A crime reporter investigating a murder discovers the case hinges on a mysterious woman he had photographed earlier.

Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.

Two friends driving in the London to Brighton vintage car rally bet on which of them will be the first to arrive back home.

When her husband is wrongly accused of murder, an opera singer sets out to find the real culprit.