Medverkande
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Harry CordingMock - Alan MowbrayMaj. Duncan-Bleek
- Dennis HoeyInspector Lestrade
- Frederick WorlockProf. William Kilbane
- Basil RathboneSherlock Holmes
- Billy BevanPassenger Car Attendant
- Nigel BruceDr. John H. Watson
- Mary ForbesLady Margaret Carstairs
- Roy William NeillRegissör
- Roy William NeillProducent
- Howard BenedictProducent
- Frank GruberFörfattare