David Charleston
Michael Redgrave
Ellen Kirby
Barbara Mullen
Harry
George Carney
Chairman of Directors
Miles Malleson
Flanning
Bryan Herbert
New Pilot
James Pirrie
Mr. Kirby
A.E. Matthews
Woman Director
Olive Sloane
Office Clerk
Tommy Duggan
Tony Quinn
British Consul
Harold Anstruther
Director
Alfred Sangster
Streeter
James Mason
Dr. Hartmann (uncredited)
Gerard Heinz
Old Woman in Cell (uncredited)
Vi Kaley
1st Magistrate (uncredited)
David Keir
Italian Police Chief (uncredited)
Andreas Malandrinos
President of the Medical Society (uncredited)
Arnold Marlé
Italian Passenger (uncredited)
Bernard Rebel
Doctor (uncredited)
Victor Rietti
1st Judge (uncredited)
Raymond Rollett
Mr. Hirohiti (uncredited)
Milo Sperber
Melanie Kurtz
Lilli Palmer
Capt. Joshua Stuart
Finlay Currie
Dr. Kurtz
Frederick Valk
Anne Marie
Sybille Binder
Briggs
Frederick Cooper
Mrs. Briggs
Jean Shepeard
Robert
Barry Morse
Screenplay
Bernard Miles
Roy Boulting
Editor
Producer
John Boulting
Camera Operator
Jack Hildyard
Jeffrey Dell
Special Effects
Frederick Ford
Tom Howard
Music
Hans May
Director of Photography
Mutz Greenbaum
Theatre Play
Robert Ardrey
Costume Design
Honoria Plesch
Sound Recordist
John Cook
Art Direction
Duncan Sutherland
Boom Operator
Percy Dayton
Assistant Art Director
Elliot Scott
Third Assistant Director
Bill Herlihy