Stephen 'Steve' Locke
Leslie Howard
Elena Moura
Kay Francis
Mr. Henry Farmer
Arthur Aylesworth
Paul DeVigney
Alphonse Ethier
Mr. X
Frank Reicher
Lenin
Tenen Holtz
Lady Carrister
Doris Lloyd
Lady Catherine Trehearne
Mary Forbes
Maria Nikolaievna (as Marina Schubert)
Marina Koshetz
Lloyd George (as George Pearce)
George C. Pearce
Mr. Kolinoff
Gregory Gaye
Count Romano
Paul Porcasi
Bob Medill
William Gargan
Russian Policeman (uncredited)
Glen Cavender
Woman Saying 'Lenin will Live' (uncredited)
Claire McDowell
Gaston LeFarge
Phillip Reed
Sergei Pavlov
Irving Pichel
'Poohbah' Evans
Ivan F. Simpson
Sir Walter Carrister
Halliwell Hobbes
Commissioner of War Trotsky
J. Carrol Naish
Under Secretary Stanley
Walter Byron
Tito Del Val
Cesar Romero
Costume Design
Orry-Kelly
Director of Photography
Ernest Haller
Director
Michael Curtiz
Camera Operator
Al Roberts
Prop Maker
Scotty Moore
Art Direction
Anton Grot
Sound Recordist
Charles David Forrest
Screenplay
Laird Doyle
Editor
Thomas Richards
Henry Blanke
Still Photographer
Homer Van Pelt
Conductor
Leo F. Forbstein
Technical Supervisor
Nicholas Kobliansky
Novel
R.H. Bruce Lockhart
Original Music Composer
Heinz Roemheld
Bernhard Kaun