Henry Victor
Wildebrandt
Paul Lukas
Dr. Kassell
Sig Ruman
Krogman
Sol Gorss
Nazi Goon at Bund Meeting (uncredited)
John Ridgely
Army Hospital Clerk (uncredited)
Lucien Prival
Kranz (uncredited)
Hans Heinrich von Twardowski
Helldorf
Joe Sawyer
Werner Renz
George Sanders
Franz Schlager
Ward Bond
American Legionnaire (uncredited)
Bodil Rosing
Passenger on Boat
Adolf Hitler
Self (archive footage) (uncredited)
Edward G. Robinson
Edward 'Ed' Renard
Francis Lederer
Kurt Schneider
Glen Cavender
Man in Montage Stuffing Mailboxes (uncredited)
John Hamilton
FBI Chief (uncredited)
Henry O'Neill
Attorney Kellogg
Regis Toomey
Tom - in Coffee Shop (uncredited)
Alec Craig
McGregor - Scottish Postman (uncredited)
Wolfgang Zilzer
Westphal
Martin Kosleck
Joseph Goebbels (uncredited)
Tempe Pigott
(uncredited)
Lya Lys
Erika Wolf
Edwin Stanley
U.S. Official (uncredited)
William Gould
FBI Agent (uncredited)
Emmett Vogan
Hotel Desk Clerk (uncredited)
Grace Stafford
Mrs. Schneider
John Harron
Man in Montage with Propaganda (uncredited)
Frederick Burton
U.S. District Court Judge
James Stephenson
British Military Intelligence Agent
Steve Pendleton
Naval Courier (uncredited)
Egon Brecher
Fritz Muller - German Agent (uncredited)
Lotte Palfi Andor
Kassel's Nurse (uncredited)
Eily Malyon
Mrs. McLaughlin
Dorothy Tree
Hilda Kleinhauer
Ray Miller
Bill - Coffee Shop Proprietor (uncredited)
Charles Trowbridge
Maj. Williams (uncredited)
Creighton Hale
Draftsman (uncredited)
Tommy Bupp
Shoeshine Boy (uncredited)
Walter Miller
Bill - Waiter with Coffee (uncredited)
Robert Emmett Keane
Harrison - Passport Official (uncredited)
Frederick Vogeding
Captain Richter
John Conte
Radio Announcer (voice) (uncredited)
Lon McCallister
(uncredited)
Selmer Jackson
Customs Official (uncredited)
Fred Graham
American Legionnaire at Bund Meeting (uncredited)
Frederick Giermann
German-American at Bund Meeting (uncredited)
Milton Kibbee
Man Greeting Waiter Bill (archive footage) (uncredited)
Stuart Holmes
Draftsman (uncredited)
Lisa Golm
Mrs. Anna Westphal (uncredited)
Jimmie Dundee
Nazi Goon at Bund Meeting (uncredited)
Lionel Royce
Hintze
Edward Keane
FBI Agent (uncredited)
Rudolph Anders
Captain Straubel
Frank Mayo
FBI Agent Phillips (uncredited)
Hans Schumm
Bismarck Officer with Crew List (uncredited)
Norman Phillips Jr.
Gottfried Simmons - Nazi Youth (uncredited)
George Offerman, Jr.
Western Union Messenger (uncredited)
Wilhelm von Brincken
Captain von Eichen
Charles Sherlock
FBI Agent Fred Young (uncredited)
Otto Reichow
Driver of Nazi Car That Crashed (uncredited)
Robert R. Stephenson
Fritz - von Eichen's Aide (uncredited)
Sherwood Bailey
Newsboy at End (uncredited)
Fred Aldrich
Nazi at Bund Meeting (uncredited)
Max Hoffman Jr.
Soldier at Renz's Arrest (uncredited)
Lester Sharpe
(uncredited)
Jack Mower
FBI Agent 'Mac' MacDonald (uncredited)
Walter Bonn
Naval Officer Seeing Renard at Seaplane (uncredited)
Frederic Tozere
FBI Agent Staunton (uncredited)
Eddie Hart
Nazi Agent (uncredited)
Arthur Stuart Hull
U.S. Government Agent (uncredited)
Louis Adlon
Nazi American Youth Leader (uncredited)
Gil Perkins
Goebbels' Aide (uncredited)
Ferdinand Schumann-Heink
(uncredited)
Rudolf Steinboeck
(uncredited)
Hedwiga Reicher
Mrs. Kassell