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William Gargan as Ellery Queen |
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Margaret Lindsay as Nikki Porter |
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John Litel as Norman Hadley |
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Charley Grapewin as Insp. Queen |
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James Burke as Sgt. Velie |
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Frank M. Thomas as Capt. H.T. Daley |
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Lilian Bond as Adele Belden |
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Morgan Conway as Ray Stafford |
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Jack La Rue as Tommy Gould |
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Charlotte Wynters as Irene Hadley |
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Noel Madison as George Belden |
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Johnny Arthur as Riley |
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Byron Foulger as Freddy Froelich |
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Marie Blake as Desk Clerk at Florence Garden Apartments |
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Syd Saylor as Fingers Muldoon |
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Willie Fung as Waiter at Golden Dragon |
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Arthur Q. Bryan as Raymond Radcliffe |
| Directing | James P. Hogan | Director |
| Writing | Manfred Lee | Writer |
| Writing | Eric Taylor | Writer |
| Camera | James S. Brown Jr. | Director of Photography |
| Writing | Frederic Dannay | Writer |
