Boris Karloff
Valdar
Pemeran
Top Billed Cast
Margaret Lindsay
Helene von Lorbeer
Bruce Lester
Frank Bennett
Leonard Mudie
James Yeats
Holmes Herbert
Arthur Bennett
?
Austin Fairman
George Bennett
William Bailey
British Intelligence Agent
Louise Brien
Miss Risdon - Bennett's Secretary
Glen Cavender
Under Officer Pfalz
?
David Cavendish
Capt. Lanark
Joe De Stefani
German Officer
?
Carlos De Valdez
Von Ritter
?
Clarence Derwent
Milkman
?
Arno Frey
German Junior Officer
?
Frederick Giermann
Otto Kurtz