Cast & Crew
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Basil RathboneSherlock Holmes - Nigel BruceDr. John H. Watson
- Marjorie RiordanSheila Woodbury
- Rosalind IvanAgatha Dunham
- Martin KosleckMirko
- John AbbottJodri
- Frederick WorlockPrime Minister
- Morton LowrySanford
- Leslie VincentNikolas Watson
- Gerald HamerKingston
- Rex EvansGregor
- Tom DillonMatthias Cherney
- Sven Hugo BorgJohansson (uncredited)
- Wilson BengeMr. Norton
- Wee Willie DavisGubec
- Gregory GayeRavez (uncredited)
- Dorothy KelloggBlonde Floozie at Bar (uncredited)
- Olaf HyttenStinson
- Roy William NeillDirector
- Roy William NeillProducer
- Howard BenedictProducer
- Leonard LeeWriter