- Writer:
- Gerald Kelsey
- Designer:
- Chris Thompson
- Producer:
- Ronald Travers
- Director:
- Morris Barry
- P.C. Culshaw:
- David Daker
- P.C. Weir:
- Joseph Brady
- Radio girl:
- Jennie Goossens
- Sgt. Lynch:
- James Ellis
- Cook:
- Alan Gerrard
- Det.-Sgt. Stone:
- John Slater
- Bert Boswell:
- David Blake Kelly
- Jim Herne:
- Peter Marinker
- Mrs. Boswell:
- Anna Manahan
- Mrs. Gray:
- Gertrude Russell
- Thorpe:
- James Locker
- Brooks:
- John Woodvine
- Sam Wicks:
- Raymond Mason
- Joe Loveday:
- James Mellor
- Burnett:
- Alan Tucker
- Supt. Allen:
- Edwin Richfield
- Desk Constable:
- Michael Earl
- Driver:
- Michael Adams