Elenco

• 

  Basil Rathbone

  Sherlock Holmes

• 

  Nigel Bruce

  Doctor Watson

• 

  Lionel Atwill

  Professor Moriarty

• 

  William Post Jr.

  Dr. Franz Tobel

• 

  Kaaren Verne

  Charlotte Eberli

• 

  Dennis Hoey

  Inspector Lestrade

• 

  Holmes Herbert

  Sir Reginald

• 

  Mary Gordon

  Mrs. Hudson

• 

  Harry Cording

  Jack Brady (uncredited)

• H

  Harold De Becker

  Peg Leg (uncredited)