Ulysses Diello
James Mason
Condesa Anna Staviska
Danielle Darrieux
Code Clerk
Patrick Whyte
Hanna Axmann-Rezzori
David Bauer
Lawrence Dobkin
Martín Garralaga
Lumsden Hare
Richard Loo
Lester Matthews
Keith McConnell
Frank McLure
Colin Travers
Michael Rennie
Charles Meakin
Alberto Morin
Nestor Paiva
Michael Pate
Konstantin Shayne
Ivan Triesault
Otto Waldis
Alfred Zeisler
British Military Attaché (uncredited)
Stuart Hall
Sir Frederic Taylor
Walter Hampden
L. C. Moyzisch
Oskar Karlweis
Col. von Richter
Herbert Berghof
Count Franz Von Papen
John Wengraf
Siebert
Ben Astar
Keith Macfadden
Roger Plowden
Singer on French Record (voice)
Diane Adrian
Screenplay
Michael Wilson
Original Music Composer
Bernard Herrmann
Director
Joseph L. Mankiewicz
Makeup Artist
Ben Nye
Producer
Otto Lang
Director of Photography
Norbert Brodine
Editor
James B. Clark
Novel
L.C. Moyzisch
Art Direction
George W. Davis
Set Decoration
Thomas Little
Sound
Roger Heman Sr.
Wardrobe Designer
Charles LeMaire
Walter M. Scott
W.D. Flick
Lyle R. Wheeler