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
Mary Gordon
Mrs. Hudson
Basil Rathbone
Sherlock Holmes
Ian Wolfe
Commissioner of Scotland Yard
Olaf Hytten
Alfred - Auction House Bookkeeper (uncredited)
Nigel Bruce
Dr. John H. Watson
Cyril Delevanti
Convict at Dartmoor Prison (uncredited)
Edmund Breon
Julian 'Stinky' Emery
Lillian Bronson
Minister's Wife (uncredited)
Leyland Hodgson
Tour Guide
Harry Cording
Hamid
Marjorie Bennett
Antique Shop Assistant (uncredited)
Frank Mills
Pub Patron (uncredited)
Holmes Herbert
Ebenezer Crabtree
Patricia Morison
Mrs. Hilda Courtney
Charlie Hall
Cab Driver (uncredited)
Sally Shepherd
Carl Harbord
Inspector Hopkins
Frederick Worlock
Colonel Cavanaugh
Jack Curtis
Pub Patron (uncredited)
William H. O'Brien
Detective at Murder Scene
Patricia Cameron
Evelyn Clifford
Frank Baker
Photographer
Wallace Scott
Joe Cisto
Bobby Hale
Pub Patron (uncredited)
Alexander Pollard
Crabtree's Assistant at Auction (uncredited)

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