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Pat O'Brien as Mike Farrough |
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Constance Bennett as Christine Blaine |
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John Halliday as John Morgan |
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Alan Baxter as Larry Perrin, alias Larry Ross |
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Erwin Kalser as Dr. Adolph Behrens |
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Edgar Buchanan as Charles Atterbee |
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Frank Sully as Tommy Malone |
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Marjorie Gateson as Mrs. Winslow |
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Francis Pierlot as Professor Mudge |
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Jessie Busley as Mrs. Mudge |
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Melville Cooper as Ship's Mate Penney |
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Stanley Logan as Captain James P. Hollister |
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Leslie Denison as Ship's Mate Jones |
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Don Beddoe as Ship's Chief Engineer Anderson |
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Norbert Schiller as Submarine First Officer |
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Frank Alten as Submarine Radio Operator |
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Bruce Bennett as Ship's gunnery officer |
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Rex Post as First Mate |
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Dick Rich as Perrin's Henchman at Dock |
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Olaf Hytten as Agent |
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Arthur Mulliner as Detective |
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Frank Baker as Detective |
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Frank Benson as Sailor |
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Bobby Hale as Sailor |
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Fred Wolff as German Sailor |
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Douglas Gordon as Ship's Lookout |
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Jean Prescott as Mrs. Hollister |
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Hans von Morhart as German Sailor |
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Paul Michael as German Sailor |
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Wyndham Standing as Man |
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Arno Frey as Submarine Gunner |
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David Dunbar as Sailor |
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James Kilgannon as Sailor |
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Hans Schumann as Submarine Commander |
| Directing | John Brahm | Director |
| Writing | P.J. Wolfson | Writer |
