Conrad Veidt ( Conrad Veidt )

Otto Becker / Baron Hugo von Detner

Ann Ayars ( Ann Ayars )

Kaaren De Relle

Frank Reicher ( Frank Reicher )

Fritz

Dorothy Tree ( Dorothy Tree )

Miss Harper

Ivan F. Simpson ( Ivan F. Simpson )

Professor Sterling (as Ivan Simpson)

William Tannen ( William Tannen )

Ludwig

Martin Kosleck ( Martin Kosleck )

Kurt Richten

Marc Lawrence ( Marc Lawrence )

Joe Aiello

Sidney Blackmer ( Sidney Blackmer )

Arnold Milbar

Moroni Olsen ( Moroni Olsen )

Brenner

Pierre Watkin ( Pierre Watkin )

Grover Blaine McHenry

Ernie Alexander ( Ernie Alexander )

Sailor (uncredited)

Rudolph Anders ( Rudolph Anders )

Cab Driver (uncredited)

Jessie Arnold ( Jessie Arnold )

Landlady (uncredited)

Walter Bacon ( Walter Bacon )

Spy (uncredited)

Polly Bailey ( Polly Bailey )

Fat Woman (uncredited)

Roy Barcroft ( Roy Barcroft )

Chief Petty Officer (uncredited)

Barbara Bedford ( Barbara Bedford )

Woman (uncredited)

Arthur Belasco ( Arthur Belasco )

Detective (uncredited)

Walter Byron ( Walter Byron )

Officer (uncredited)

Baldwin Cooke ( Baldwin Cooke )

Waiter (uncredited)

Hal Cooke ( Hal Cooke )

Clerk (uncredited)

Clyde Courtright ( Clyde Courtright )

Doorman (uncredited)

Stuart Crawford ( Stuart Crawford )

Commentator (voice) (uncredited)

Jack Daley ( Jack Daley )

Reporter (uncredited)

Mark Daniels ( Mark Daniels )

Cab Driver (uncredited)

Cliff Danielson ( Cliff Danielson )

Youth (uncredited)

Jack Deery ( Jack Deery )

Diplomat (uncredited)

Drew Demorest ( Drew Demorest )

Reporter (uncredited)

Harry Denny ( Harry Denny )

Restaurant Patron (uncredited)

Herschel Graham ( Herschel Graham )

Reporter (uncredited)

Bernadene Hayes ( Bernadene Hayes )

Rosie (uncredited)

Edward Hearn ( Edward Hearn )

Reporter (uncredited)

Robert Homans ( Robert Homans )

1st Captain (uncredited)

Carl M. Leviness ( Carl M. Leviness )

Onlooker at Departure (uncredited)

Wilbur Mack ( Wilbur Mack )

Reporter (uncredited)

George Magrill ( George Magrill )

Thug (uncredited)

Frank Marlowe ( Frank Marlowe )

Sailor (uncredited)

Charles Meakin ( Charles Meakin )

Restaurant Patron (uncredited)

James Millican ( James Millican )

Operator (uncredited)

Roger Moore ( Roger Moore )

Messenger (uncredited)

George Noisom ( George Noisom )

Bellboy (uncredited)

William Post Jr. ( William Post Jr. )

Harry (voice) (uncredited)

Paul Power ( Paul Power )

Restaurant Patron (uncredited)

Christian Rub ( Christian Rub )

Mohr (uncredited)

Buck Russell ( Buck Russell )

Restaurant Patron (uncredited)

Tim Ryan ( Tim Ryan )

Officer (uncredited)

Jeffrey Sayre ( Jeffrey Sayre )

Restaurant Patron (uncredited)

Charles Sherlock ( Charles Sherlock )

Detective (uncredited)

Russell Simpson ( Russell Simpson )

2nd Captain (uncredited)

Harry Stafford ( Harry Stafford )

Elderly Man (uncredited)

Hermine Sterler ( Hermine Sterler )

Mrs. Mohr (uncredited)

Tom Stevenson ( Tom Stevenson )

Headwaiter (uncredited)

Brick Sullivan ( Brick Sullivan )

Radio Operator (uncredited)

Ray Teal ( Ray Teal )

Officer Graves (uncredited)

Philip Van Zandt ( Philip Van Zandt )

Thug (uncredited)

Roland Varno ( Roland Varno )

Bauer (uncredited)

Duke York ( Duke York )

Sailor (uncredited)

Jeff York ( Jeff York )

Keeler (uncredited)

Joe Yule ( Joe Yule )

Barney (uncredited)

William Bailey ( William Bailey )

Margaret Bert ( Margaret Bert )

Joe Gilbert ( Joe Gilbert )

Submarine Radioman (uncredited)