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Arthur Shields as The Bookshop Man |
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Alan Napier as Sherlock Holmes |
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Evelyn Ankers as Miss Stoner |
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Melville Cooper as Dr. John H. Watson |
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Edgar Barrier as Dr. Grimesby Roylott |
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Richard Fraser as John Armitage |
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Gail Roberts as Jean Stoner |
| Writing | Arthur Conan Doyle | Story |
| Sound | William Lava | Music |
| Writing | Walter Doniger | Writer |
| Directing | Sobey Martin | Director |
| Production | Rudolph E. Abel | Production Supervisor |
| Production | Marshall Grant | Producer |
| Art | Eugène Lourié | Art Direction |
| Production | Stanley Rubin | Producer |
| Editing | Dann Cahn | Editor |
| Crew | William Bradford | Cinematography |
