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