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Lionel Atwill as Dr. Otto von Niemann |
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Fay Wray as Ruth Bertin |
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Melvyn Douglas as Karl Brettschneider |
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Maude Eburne as Aunt Gussie Schnappmann |
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George E. Stone as Kringen |
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Dwight Frye as Herman Gleib |
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Robert Frazer as Emil |
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Rita Carlyle as Martha |
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Lionel Belmore as Bürgermeister Gustave Schoen |
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William V. Mong as Sauer |
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Stella Adams as Georgiana |
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Harrison Greene as Weingarten |
| Directing | Frank R. Strayer | Director |
| Production | Phil Goldstone | Producer |
| Camera | Ira H. Morgan | Director of Photography |
| Editing | Otis Garrett | Editor |
| Writing | Edward T. Lowe Jr. | Writer |
| Production | Larry Darmour | Executive Producer |
| Sound | Mischa Bakaleinikoff | Music |
| Sound | Abe Meyer | Music Director |
| Sound | Peter Brunelli | Music |
| Sound | Charles Dunworth | Music |
| Art | Daniel Hall | Art Direction |
| Sound | Dick Tyler Sr. | Sound Engineer |
| Writing | Edward T. Lowe Jr. | Screenstory |
| Art | Charles D. Hall | Art Direction |