- Writer:
- Ted Willis
- Designer:
- Stanley Morris
- Production:
- Douglas Moodie
- P.C. George Dixon:
- Jack Warner
- Sergeant Flint:
- Arthur Rigby
- Andy Crawford, C.I.D.:
- Peter Byrne
- Cadet Jamie MacPherson:
- David Webster
- Duffy Clayton:
- Harold Scott
- Mary:
- Jeannette Hutchinson
- Sergeant Grace Millard:
- Moira Mannion
- P.C. Lauderdale:
- Geoffrey Adams
- P.C. Hughes:
- Graham Ashley
- Patrick Mulligan:
- Shay Gorman
- P.C. Bedlow:
- Stanley Platts
