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Craig Stevens as Carl Becker |
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Faye Emerson as Paula Fengler |
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John Ridgely as John Trent |
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Charles Lang as Jim Jackson |
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Robert Warwick as Dr. Woodford |
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Frank Reicher as Henry Bremmer |
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Rex Williams as Hans |
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Frank Wilcox as Senior Agent |
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George Meeker as Rudolph Dietz |
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Roland Drew as Fred Blosser - Chauffeur |
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Addison Richards as C.G. Travers |
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Cliff Clark as Detective Capt. Jarrett |
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Monte Blue as Hugo Mehl |
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Ray Teal as Casey (uncredited) |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Costume & Make-Up | Milo Anderson | Costume Design |
| Art | Casey Roberts | Set Decoration |
| Art | Hugh Reticker | Art Direction |
| Sound | Oliver S. Garretson | Sound |
| Editing | Doug Gould | Editor |
| Crew | Edwin B. DuPar | Special Effects |
| Directing | Benjamin Stoloff | Director |
| Writing | Raymond L. Schrock | Screenplay |
| Camera | James Van Trees | Director of Photography |
