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Ralph Bellamy as Ellery Queen |
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Margaret Lindsay as Nikki Porter |
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Charley Grapewin as Insp. Queen |
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Spring Byington as Carlotta Emerson |
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H.B. Warner as Ray Jardin |
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James Burke as Sgt. Velie |
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Douglass Dumbrille as John Matthews |
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John Beal as Walter Matthews |
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Linda Hayes as Marian Jardin |
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Sidney Blackmer as Anthony Rhodes |
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Walter Kingsford as Henry (Jardin butler) |
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Honorable Wu as Lee (Matthews butler) |
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Charles Lane as Dr. Prouty (coroner) |
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Charles Halton as Rufus Smith (auctioneer) |
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Arthur Q. Bryan as Book salesman |
| Directing | James P. Hogan | Director |
| Writing | Manfred Lee | Writer |
| Writing | Eric Taylor | Screenplay |
| Writing | Frederic Dannay | Writer |
