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Donald Cook as Ellery Queen |
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Helen Twelvetrees as Stella Godfrey |
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Berton Churchill as Judge Macklin |
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Frank Sheridan as Walter Godfrey |
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Harry Stubbs as Sheriff Moley |
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Guy Usher as Inspector Queen |
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Huntley Gordon as David Kummer |
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Jack La Rue as Gardner |
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Betty Blythe as Mrs. Godfrey |
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George Cleveland as Jorum |
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Olaf Hytten as DuPre |
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Ruth Gillette as Laura Constable |
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Frank Leigh as Bank Teller |
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Barbara Bedford as Mrs. Munn |
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George Baxter as John Marko |
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Katherine Morrow as Pitts |
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Arnold Gray as Leslie Court |
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Lee Prather as Police Officer Hunt |
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Arthur Aylesworth as George Munn (uncredited) |
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Richard Cramer as Gunman (uncredited) |
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Lee Phelps as Detective (uncredited) |
| Directing | Lewis D. Collins | Director |
| Writing | Frederic Dannay | Novel |
| Writing | Manfred Lee | Novel |
| Writing | Albert DeMond | Screenplay |
| Crew | Gilbert Warrenton | Cinematography |
| Editing | Ernie Leadlay | Editor |
| Production | M.H. Hoffman | Producer |
| Production | Rudolph C. Flothow | Production Manager |
| Production | Ray Culley | Production Manager |
| Sound | Hal Bumbaugh | Sound Recordist |
| Crew | Eddie Parker | Stunts |
| Costume & Make-Up | Lettie Lee | Costume Supervisor |
| Costume & Make-Up | Eugene Joseff | Costumer |
| Sound | Abe Meyer | Music Coordinator |
| Sound | Mischa Bakaleinikoff | Music |
