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