Mystery Crime Thriller
A convicted thief in Dartmoor prison hides the location of the stolen Bank of England printing plates inside three music boxes. When the innocent purchasers of the boxes start to be murdered, Holmes and Watson investigate.
Directed by
Roy William Neill
Frank Mills
Pub Patron (uncredited)
Ian Wolfe
Commissioner of Scotland Yard
Leyland Hodgson
Tour Guide
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Dr. John H. Watson
Olaf Hytten
Alfred - Auction House Bookkeeper (uncredited)
Mary Gordon
Mrs. Hudson
Lillian Bronson
Minister's Wife (uncredited)
Cyril Delevanti
Convict at Dartmoor Prison (uncredited)
Holmes Herbert
Ebenezer Crabtree
Edmund Breon
Julian 'Stinky' Emery
Marjorie Bennett
Antique Shop Assistant (uncredited)
Frank Baker
Photographer
Charlie Hall
Cab Driver (uncredited)
Harry Cording
Hamid
Patricia Morison
Mrs. Hilda Courtney
Jack Curtis
Pub Patron (uncredited)
Frederick Worlock
Colonel Cavanaugh
Carl Harbord
Inspector Hopkins
William H. O'Brien
Detective at Murder Scene
Sally Shepherd
Patricia Cameron
Evelyn Clifford
Wallace Scott
Joe Cisto
Bobby Hale
Pub Patron (uncredited)
Alexander Pollard
Crabtree's Assistant at Auction (uncredited)

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