All Cast
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
Clare Hamilton
Mary Skelton
Frederick Valk
Emil Schimler, alias Paul Heimberger
Patricia Medina
Odette Roux
Anthony Shaw
Major Anthony Chandon-Hartley
Laurence Hanray
Police Commissioner
David Ward
Henri Asticot
Valentine Dyall
Warren Skelton
Joseph Almas
Albert, the Waiter
Patricia Hayes
Woman
Hella Kürty
Hilda Vogel
Ivor Barnard
P. Molon, chemist
Ernst Ulman
Detective in Black Suit
John Baker
Policeman
Mike Johnson
Old Man
Victor Rietti
Restaurant Owner