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Eille Norwood as Sherlock Holmes |
 |
Hubert Willis as Dr. John Watson |
 |
Malcolm Tod as Cadogan West |
|
Lewis Gilbert as Mycroft Holmes |
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Teddy Arundell as Insp. Stanley Hopkins |
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Leslie Brittain as Sidney Johnson |
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Edward Sorley as Hugh Oberstein |
|
Ronald Power as Col. Valentine Walter |
| Directing | George Ridgwell | Director |
| Writing | Geoffrey Malins | Writer |
| Writing | Артур Конан Дойль | Novel |
| Writing | Patrick L. Mannock | Writer |
