- Writer:
- Francis Durbridge
- Film Cameraman:
- A.A. Englander
- Film Editor:
- Valerie Best
- Story Editor:
- John Wiles
- Designer:
- Evan Hercules
- Producer/Director:
- Alan Bromly
- Barbara Smith:
- Audine Leite
- Harry Brent:
- Edward Brayshaw
- Eric Vyner:
- Bernard Brown
- Gladys:
- Penny Lambirth
- Harold Tolly:
- Brian Wilde
- Carol Vyner:
- Jennifer Daniel
- Thomas Fielding:
- Gerald Young
- Det-Insp. Alan Milton:
- Gerald Harper
- Det-Sgt. Roy Philips:
- Peter Ducrow
- Tomlins:
- Christopher Wray
- Bernard Wedgwood:
- John Falconer
- Olive:
- Winifred Dennis
- Dr. Fess:
- Michael Harding