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.
Basil Rathbone
as Sherlock Holmes
Nigel Bruce
as Dr. John Watson
Hillary Brooke
as Lydia Marlowe
Henry Daniell
as Professor James Moriarty
Paul Cavanagh
as Sir George Fenwick
Matthew Boulton
as Inspector Gregson
Eve Amber
as Maude Fenwick
Frederick Worlock
as Dr. Onslow
Percival Vivian
as Dr. Simnell
Coulter Irwin
as Corporal Williams
Sally Shepherd
as Crandon
Mary Gordon
as Mrs. Hudson
