Directors

Cast

Pat O'Brien
Pat O'Brien
Mike Farrough
Constance Bennett
Constance Bennett
Christine Blaine
John Halliday
John Halliday
John Morgan
Alan Baxter
Alan Baxter
Larry Perrin, alias Larry Ross
Erwin Kalser
Erwin Kalser
Dr. Adolph Behrens
Edgar Buchanan
Edgar Buchanan
Charles Atterbee
Frank Sully
Frank Sully
Tommy Malone
Marjorie Gateson
Marjorie Gateson
Mrs. Winslow
Francis Pierlot
Francis Pierlot
Professor Mudge
Jessie Busley
Jessie Busley
Mrs. Mudge
Melville Cooper
Melville Cooper
Ship's Mate Penney
Stanley Logan
Stanley Logan
Captain James P. Hollister
Leslie Denison
Leslie Denison
Ship's Mate Jones
Don Beddoe
Don Beddoe
Ship's Chief Engineer Anderson
Hans Schumann
Hans Schumann
Submarine Commander
Norbert Schiller
Norbert Schiller
Submarine First Officer
Frank Alten
Frank Alten
Submarine Radio Operator
Bruce Bennett
Bruce Bennett
Ship's gunnery officer
Rex Post
Rex Post
First Mate
Dick Rich
Dick Rich
Perrin's Henchman at Dock
Frank Baker
Frank Baker
Detective
Fred Wolff
Fred Wolff
German Sailor
Douglas Gordon
Douglas Gordon
Ship's Lookout
Jean Prescott
Jean Prescott
Mrs. Hollister
Hans von Morhart
Hans von Morhart
German Sailor
Paul Michael
Paul Michael
German Sailor
Arno Frey
Arno Frey
Submarine Gunner
David Dunbar
David Dunbar
Sailor, not listed in credits
James Kilgannon
James Kilgannon
Sailor, not listed in credits

Cinematography

Art Direction

Editors