 |
Eille Norwood as Sherlock Holmes |
 |
Hubert Willis as Dr. John Watson |
|
Tom Beaumont as Insp. Gregory |
|
Lionel d'Aragon as Count Sylvinus |
|
Laurie Leslie as Merton |
| Directing | George Ridgwell | Director |
| Writing | Arthur Conan Doyle | Story |
| Writing | Geoffrey Malins | Writer |
| Writing | Patrick L. Mannock | Writer |
