All Cast
Walter Pidgeon
Captain Alan Thorndike
Joan Bennett
Jerry Stokes
George Sanders
Major Quive-Smith
John Carradine
Mr. Jones
Roddy McDowall
Vaner
Ludwig Stössel
Doctor
Heather Thatcher
Lady Alice Risborough
Frederick Worlock
Lord Gerald Risborough
Roger Imhof
Captain Jensen
Holmes Herbert
Saul Farnsworthy
Egon Brecher
Jeweler
Eily Malyon
Postmistress
Herbert Evans
Reeves (uncredited)
Charles Bennett
Frank Benson
Ted Billings
Walter Bonn
Sven Hugo Borg
Cyril Delevanti
Cab Driver (uncredited)
Carl Ekberg
Adolf Hitler
Richard Fraser
Arno Frey
Douglas Gerrard
William Haade
Keith Hitchcock
Olaf Hytten
Piel - Saul's Law Clerk (uncredited)
Hans Joby
Kurt Kreuger
German Attaché (uncredited)
Bruce Lester
Adolf E. Licho
Lester Matthews
Major (uncredited)
Virginia McDowall
Adolph Milar
Carl Ottmar
Lucien Prival
Otto Reichow
John Rogers
Clifford Severn
Robert R. Stephenson
Frederick Vogeding
Wilhelm von Brincken