Cast

John Longden

Sherlock Holmes

Campbell Singer

Dr. Watson

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Hector Ross

Neville St. Clair

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Ninka Dolega

Kate St. Clair

Beryl Baxter

Doreen

Walter Gotell

Luzatto

Crew

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Richard M. Grey

Director (Directing)

Arthur Conan Doyle

Novel (Writing)

Rudolph Cartier

Producer (Production)