Paul Temple
John Bentley
Steve Temple
Dinah Sheridan
Bill Bryant
Bruce Seton
Dr. Steiner
Leo de Pokorny
Hammond
Michael Brennan
Inspector Crane
Joseph O'Conor
Rikki
Shaym Bahadur
Ernie
Gerald Rex
Mr. Weston
Ben Williams
Celia Hardwick
Anne Hayes
Post Office Engineer
Peter Butterworth
An Interested Visitor
Hamilton Keene
Sir Graham Forbes
Jack Livesey
Doctor
Frederick Morant
Nurse
Jean Packer
1st Gangster
Dennis Val Norton
2nd Gangster
Michael Hogarth
Mrs. Weston
Beatrice Varley
Mrs. Morgan
Barbara Couper
Jacqueline Giraud
Jenny Mathot
Professor Hardwick
Andrew Leigh
Oliver Ffollett
Hugh Dempster
Van Draper
Dino Galvani
Major Murray
Ivan Samson
Music
Stanley Black
Director
Maclean Rogers
Assistant Director
Denis Johnson
Screenplay
A.R. Rawlinson
Director of Photography
Brendan J. Stafford
Story
Francis Durbridge
Associate Producer
Producer
Ernest G. Roy