- Unknown:
- R. C Sherriff
- Unknown:
- Ayton Whitaker
- Played By:
- Michael Nightingale
- Played By:
- Frances Clare
- Played By:
- Peter Wigzell.
- Played By:
- Margaret Chisholm
- Played By:
- Kenneth Edwards
- Unknown:
- Edith Savile
- Produced By:
- Ayton Whitaker
- John Greenwood:
- Ralph Richardson
- Lady Mary:
- Meg Maxwell
- Police Constable Thompson:
- Campbell Singer
- Police Sergeant Phillips:
- John Boxer
- Mr Gurney (The Coroner):
- Frederick Piper
- Dr MacGregor (Police Surgeon):
- Harry Lockwood West
- Lydia Truscott:
- Meriel Forbes
- Mr Pendlebury (The Vicar):
- Harcourt Williams
- Mrs Carter:
- Ann Wilton
- Sir Horace Duncan (of the Home Office):
- Colin Gordon
