Kirk Douglas
Dr. Rolf Pedersen
Richard Harris
Knut Straud
Ulla Jacobsson
Anna Pedersen
Michael Redgrave
Uncle
David Weston
Arne
Anton Diffring
Major Frick
Eric Porter
Terboven
Mervyn Johns
Col. Wilkinson
Jennifer Hilary
Sigrid
Roy Dotrice
Jensen
Barry Jones
Professor Logan
Ralph Michael
Nilssen
Geoffrey Keen
General Bolt
Maurice Denham
Doctor
Robert Ayres
General Courts
Alan Howard
Oli
Patrick Jordan
Henrik
William Marlowe
Claus
Karl Stepanek
Hartmuller
Faith Brook
Woman on Bus
Elvi Hale
Mrs. Sandersen
Gerard Heinz
Erhardt
Russell Waters
Mr. Sandersen
Annette Andre
Girl Student (uncredited)
Wolf Frees
Knippelberg
Sebastian Breaks
Gunnar
John Golightly
Freddy
Brook Williams
Einar
David Davies
Captain of "Galtesund"
Victor Beaumont
German Sergeant
Philo Hauser
Businessman
George Murcell
Sturmfuhrer
Jan Conrad
Watchman in Factory