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
Written by: Leonard Lee
Runtime: 72 minutes
Critics score:
Tagline: Queen…of a crime cult!
Related titles:
Cast:
Basil Rathbone Basil Rathbone
Sherlock Holmes 
Nigel Bruce Nigel Bruce
Dr. John H. Watson 
Patricia Morison Patricia Morison
Mrs. Hilda Courtney 
Frederick Worlock Frederick Worlock
Colonel Cavanaugh 
Harry Cording Harry Cording
Hamid 
Carl Harbord Carl Harbord
Inspector Hopkins 
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Also known as:
  • Sherlock Holmes et la clé
  • Sherlock Holmes en Vestida para un asesinato
  • Vestida para un asesinato
  • Todbringende Spieldosen
  • Prelude to Murder