James Mason
Peter Vadassy
Lucie Mannheim
Mme Suzanne Koch
Raymond Lovell
Robert Duclos
Julien Mitchell
Michel Beghin, intelligence chief
Herbert Lom
Andre Roux
Martin Miller
Walter Vogel
Frederick Valk
Emil Schimler, alias Paul Heimberger
Patricia Medina
Odette Roux
Laurence Hanray
Police Commissioner
Valentine Dyall
Warren Skelton
Patricia Hayes
Woman
Ivor Barnard
P. Molon, chemist
Victor Rietti
Restaurant Owner
Clare Hamilton
Mary Skelton
Anthony Shaw
Major Anthony Chandon-Hartley
David Ward
Henri Asticot
Joseph Almas
Albert, the Waiter
Hella Kürty
Hilda Vogel
Ernst Ulman
Detective in Black Suit
John Baker
Policeman
Mike Johnson
Old Man
Hugo Schuster
Inspector