- Writer:
- George F. Kerr
- Designer:
- Chris Thompson
- Producer:
- Ronald Travers
- Director:
- Morris Barry
- P.C. Weir:
- Joseph Brady
- P.C. Culshaw:
- David Darer
- Mr. Potter:
- Frederick Hall
- Radio girl:
- Jennie Goossens
- Newsvendor:
- Louis Raynes
- Barmaid:
- Maggie Jones
- Sgt. Lynch:
- James Ellis
- Tom Fielding:
- Gordon Griffin
- Vera Fielding:
- Rosalind Elliot
- Mitchell:
- Michael Graham Cox
- Mr. Pendleton:
- James Donnelly
- Julie Peters:
- Sue Whitman
- Pickup:
- Allan Surtees
- Det.-Insp. Carter:
- William Lucas
- Det.-Sgt. Stone:
- John Slater
- Desk Constable:
- Michael Earl
- Waitress:
- Margaret Heald
- Mrs. Pendleton:
- Anne Ridler
- Mrs. Potter:
- Gillian Raine
- Barman:
- Allan Johns