- Writer:
- Ted Willis
- Designer:
- Norman James
- Production:
- Douglas Moodie
- P.C. George Dixon:
- Jack Warner
- Mary:
- Jeannette Hutchinson
- Det-Sgt Andy Crawford:
- Peter Byrne
- Jennie Wren:
- Hilda Fenemore
- Duffy Clayton:
- Harold Scott
- Sergeant Flint:
- Arthur Rigby
- P.C. Lauderdale:
- Geoffrey Adams
- Cadet Jamie MacPherson:
- David Webster
- Mrs Donnelly:
- Joan Young
- Det-Con Tommy Hughes:
- Graham Ashley
- Sergeant Grace Millard:
- Moira Mannion
- W.P.C. Kay Shaw:
- Jocelyne Rhodes
- Don Croft:
- Anthony Newlands
- Irene Croft:
- Joy Stewart
