- Moroni Olsen - Brenner
- Pierre Watkin - Grover Blaine McHenry
- Ernie Alexander - Sailor (uncredited)
- Rudolph Anders - Cab Driver (uncredited)
- Jessie Arnold - Landlady (uncredited)
- Walter Bacon - Spy (uncredited)
- Polly Bailey - Fat Woman (uncredited)
- Roy Barcroft - Chief Petty Officer (uncredited)
- Barbara Bedford - Woman (uncredited)
- Arthur Belasco - Detective (uncredited)
- Walter Byron - Officer (uncredited)
- Baldwin Cooke - Waiter (uncredited)
- Hal Cooke - Clerk (uncredited)
- Clyde Courtright - Doorman (uncredited)
- Stuart Crawford - Commentator (voice) (uncredited)
- Jack Daley - Reporter (uncredited)
- Mark Daniels - Cab Driver (uncredited)
- Cliff Danielson - Youth (uncredited)
- Jack Deery - Diplomat (uncredited)
- Drew Demorest - Reporter (uncredited)
- Harry Denny - Restaurant Patron (uncredited)
- Herschel Graham - Reporter (uncredited)
- Bernadene Hayes - Rosie (uncredited)
- Edward Hearn - Reporter (uncredited)
- Robert Homans - 1st Captain (uncredited)
- Carl M. Leviness - Onlooker at Departure (uncredited)
- Wilbur Mack - Reporter (uncredited)
- George Magrill - Thug (uncredited)
- Frank Marlowe - Sailor (uncredited)
- Charles Meakin - Restaurant Patron (uncredited)
- James Millican - Operator (uncredited)
- Roger Moore - Messenger (uncredited)
- George Noisom - Bellboy (uncredited)
- William Post Jr. - Harry (voice) (uncredited)
- Paul Power - Restaurant Patron (uncredited)
- Christian Rub - Mohr (uncredited)
- Buck Russell - Restaurant Patron (uncredited)
- Tim Ryan - Officer (uncredited)
- Jeffrey Sayre - Restaurant Patron (uncredited)
- Charles Sherlock - Detective (uncredited)
- Russell Simpson - 2nd Captain (uncredited)
- Harry Stafford - Elderly Man (uncredited)
- Hermine Sterler - Mrs. Mohr (uncredited)
- Tom Stevenson - Headwaiter (uncredited)
- Brick Sullivan - Radio Operator (uncredited)
- Ray Teal - Officer Graves (uncredited)
- Philip Van Zandt - Thug (uncredited)
- Roland Varno - Bauer (uncredited)
- Duke York - Sailor (uncredited)
- Jeff York - Keeler (uncredited)
- Joe Yule - Barney (uncredited)
- Joe Gilbert - Submarine Radioman (uncredited)
- Jules Dassin
- Lothar Mendes
- Irving Asher
- Daniele Amfitheatrof
- Bronislau Kaper
- David Snell
- Douglas Shearer
- Sol Kaplan
Conrad Veidt interpreta a Otto Becker / Baron Hugo von Detner en la película.
Ann Ayars interpreta a Kaaren De Relle en la película.
Frank Reicher interpreta a Fritz en la película.
Dorothy Tree hace el papel de Miss Harper.
Ivan F. Simpson hace el papel de Professor Sterling (as Ivan Simpson).
William Tannen interpreta a Ludwig en la película.
Martin Kosleck hace el papel de Kurt Richten.
Marc Lawrence interpreta a Joe Aiello en la película.
Sidney Blackmer hace el papel de Arnold Milbar.
Moroni Olsen interpreta a Brenner en la película.
Pierre Watkin interpreta a Grover Blaine McHenry en la película.
Ernie Alexander interpreta a Sailor (uncredited) en la película.
Rudolph Anders hace el papel de Cab Driver (uncredited).
Jessie Arnold hace el papel de Landlady (uncredited).
Walter Bacon hace el papel de Spy (uncredited).
Polly Bailey interpreta a Fat Woman (uncredited) en la película.
Roy Barcroft hace el papel de Chief Petty Officer (uncredited).
Barbara Bedford hace el papel de Woman (uncredited).
Arthur Belasco hace el papel de Detective (uncredited).
Walter Byron interpreta a Officer (uncredited) en la película.
Baldwin Cooke hace el papel de Waiter (uncredited).
Hal Cooke interpreta a Clerk (uncredited) en la película.
Clyde Courtright interpreta a Doorman (uncredited) en la película.
Stuart Crawford interpreta a Commentator (voice) (uncredited) en la película.
Jack Daley hace el papel de Reporter (uncredited).
Mark Daniels interpreta a Cab Driver (uncredited) en la película.
Cliff Danielson interpreta a Youth (uncredited) en la película.
Jack Deery hace el papel de Diplomat (uncredited).
Drew Demorest hace el papel de Reporter (uncredited).
Harry Denny interpreta a Restaurant Patron (uncredited) en la película.
Herschel Graham interpreta a Reporter (uncredited) en la película.
Bernadene Hayes interpreta a Rosie (uncredited) en la película.
Edward Hearn interpreta a Reporter (uncredited) en la película.
Robert Homans hace el papel de 1st Captain (uncredited).
Carl M. Leviness interpreta a Onlooker at Departure (uncredited) en la película.
Wilbur Mack interpreta a Reporter (uncredited) en la película.
George Magrill interpreta a Thug (uncredited) en la película.
Frank Marlowe hace el papel de Sailor (uncredited).
Charles Meakin interpreta a Restaurant Patron (uncredited) en la película.
James Millican hace el papel de Operator (uncredited).
Roger Moore interpreta a Messenger (uncredited) en la película.
George Noisom interpreta a Bellboy (uncredited) en la película.
William Post Jr. interpreta a Harry (voice) (uncredited) en la película.
Paul Power interpreta a Restaurant Patron (uncredited) en la película.
Christian Rub interpreta a Mohr (uncredited) en la película.
Buck Russell interpreta a Restaurant Patron (uncredited) en la película.
Tim Ryan hace el papel de Officer (uncredited).
Jeffrey Sayre interpreta a Restaurant Patron (uncredited) en la película.
Charles Sherlock interpreta a Detective (uncredited) en la película.
Russell Simpson interpreta a 2nd Captain (uncredited) en la película.
Harry Stafford interpreta a Elderly Man (uncredited) en la película.
Hermine Sterler interpreta a Mrs. Mohr (uncredited) en la película.
Tom Stevenson hace el papel de Headwaiter (uncredited).
Brick Sullivan interpreta a Radio Operator (uncredited) en la película.
Ray Teal hace el papel de Officer Graves (uncredited).
Philip Van Zandt interpreta a Thug (uncredited) en la película.
Roland Varno hace el papel de Bauer (uncredited).
Duke York interpreta a Sailor (uncredited) en la película.
Jeff York hace el papel de Keeler (uncredited).
Joe Yule interpreta a Barney (uncredited) en la película.
William Bailey interpreta a en la película.
Margaret Bert interpreta a en la película.
Joe Gilbert interpreta a Submarine Radioman (uncredited) en la película.
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