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Уильям Гарган as Ellery Queen |
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Margaret Lindsay as Nikki Porter |
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Charley Grapewin as Inspector Richard Queen |
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Гейл Сондергард as Mrs. Van Dorn |
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Gilbert Roland as Paul Gilette |
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Sig Ruman as Heinrich, Spy Leader |
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Джеймс Бёрк as Police Sergeant Velie |
| Directing | James P. Hogan | Director |
| Writing | Manfred Lee | Story |
| Writing | Frederic Dannay | Story |
| Writing | Eric Taylor | Screenplay |
| Crew | Arthur Strawn | Additional Dialogue |
