Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.
Sherlock Holmes
Basil Rathbone
Dr. John Watson
Nigel Bruce
Lydia Marlowe
Hillary Brooke
Professor James Moriarty
Henry Daniell
Sir George Fenwick
Paul Cavanagh
Inspector Gregson
Matthew Boulton
Maude Fenwick
Eve Amber
Dr. Onslow
Frederick Worlock
Dr. Simnell
Percival Vivian
Corporal Williams
Coulter Irwin
Crandon
Sally Shepherd
Mrs. Hudson
Mary Gordon
Waring the Mesmerist (uncredited)
John Burton
Shoelace Vendor Henchman (uncredited)
Harold De Becker
Carter the Hypnotized Subject (uncredited)
Tony Ellis
Bar Patron (seen in mirror) (uncredited)
Bess Flowers
4th Victim (uncredited)
Kay Harding
Commissioner of the CID (uncredited)
Alec Harford
Fenwick's Butler Norris (uncredited)
Olaf Hytten
Short-Tempered Officer Closing Window (uncredited)
Boyd Irwin
Member of Mesmer Club (uncredited)
Eric Mayne
Pembrook House Waiter (uncredited)
William H. O'Brien