On screen
Cast
16 credited performers
Richard Hearne
Mr. Pastry
William Hartnell
Bert
Austin Trevor
Sir Hervey Shaw
Joan Marion
Angela Shaw
Artwork unavailable
Robert Moreton
Jevons
Ralph Truman
Inspector Bridger
Ronald Adam
Psychiatrist
Junia Crawford
Diana Little
Tony Quinn
Cracknell
Artwork unavailable
Sylvia Bidmead
Swissair Girl
Brian Harrington
Police Doctor
Artwork unavailable
Yvonne Hearne
Matron
William Mervyn
Roberts (MI5)
Artwork unavailable
Cyril Renison
Plain Clothes Officer
Neil Wilson
Milligan
John Stuart
Doctor