Melodia Fatal
Voltar
Basil RathboneSherlock Holmes
Nigel BruceDr. John H. Watson
Patricia MorisonMrs. Hilda Courtney
Frederick WorlockColonel Cavanaugh
Harry CordingHamid
Carl HarbordInspector Hopkins
Holmes HerbertEbenezer Crabtree
Edmund BreonJulian 'Stinky' Emery- Patricia CameronEvelyn Clifford
Mary GordonMrs. Hudson
Ian WolfeCommissioner of Scotland Yard
Leyland HodgsonTour Guide
Marjorie BennettAntique Shop Assistant (sem créditos)
William H. O'BrienDetective at Murder Scene
Frank BakerPhotographer
Sally Shepherd- Wallace ScottJoe Cisto
- Jack CurtisPub Patron (sem créditos)
Cyril DelevantiConvict at Dartmoor Prison (sem créditos)
Charlie HallCab Driver (sem créditos)
Olaf HyttenAlfred - Auction House Bookkeeper (sem créditos)
Frank MillsPub Patron (sem créditos)
Lillian BronsonMinister's Wife (sem créditos)- Bobby HalePub Patron (sem créditos)
- Alexander PollardCrabtree's Assistant at Auction (sem créditos)