Capt. Hyde
Leslie Banks
Alison Devar
Kay Walsh
Waiter
Gordon Begg
Insp. Blake
Robert Field
Lt. John Strepte
Peter Shaw
Newton Hulls
Mackenzie Ward
Cmdr. Herbert
Cecil Parker
Philip Hyde
Simon Lack
Margaret Hulls
Ellen Pollock
Rudd
Nigel Stock
Prof Devar
Kynaston Reeves
Commander-in-Chief
Charles Eaton
Naval Intelligence Officer
Ian Fleming
Scenario Writer
George Barraud
Director
Maurice Elvey
Screenplay
Production Manager
Louis London
Assistant Director
Fred V. Merrick
Gerald Elliott
D. William Woolf
Dialogue
Reginald Long
Producer
K.C. Alexander
Director of Photography
Eric Cross
Editor
Douglas Myers
Art Direction
James A. Carter
Makeup Artist
Harold Fletcher
Sound
Leo Wilkins
Camera Operator
Skeets Kelly
Ted Moore