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.
1 June 1956
|Jack Hawkins||...||Supt Tom Halliday|
|John Stratton||...||Sergeant Ward|
|Dorothy Alison||...||Mary Halliday|
|Michael Brooke||...||Tony Halliday|
|Glyn Houston||...||Police Sergeant|