- Writer:
- Ted Willis
- Designer:
- Robert MacGowan
- Film sequences photographed by:
- Eric Deeming
- Film sequences photographed by:
- Peter Hall
- Film Editor:
- Ken Cooper
- Production:
- Douglas Moodie
- P.C. George Dixon:
- Jack Warner
- Det-Sgt Andy Crawford:
- Peter Byrne
- Mary:
- Jeannette Hutchinson
- Sergeant Grace Millard:
- Moira Mannion
- Ames:
- Kenneth J. Warren
- Joyce:
- Patricia Salonika
- Det-Con Hughes:
- Graham Ashley
- P.C. Lauderdale:
- Geoffrey Adams
- Cadet Jamie MacPherson:
- David Webster
- Sergeant Flint:
- Arthur Rigby
- Bruce Treadgold:
- William Mervyn
- Henri:
- Richard Statman
- Cordeau:
- Peter Elliott
- Cloakroom Attendant:
- Elizabeth Broom
- First Gendarme:
- Joseph Levine
- Second Gendarme:
- Henry Rayner
