Sherlock Holmes and the Secret Weapon

In the midst of World War II, Sherlock Holmes rescues the Swiss inventor of a new bomb-sight from the Gestapo and brings him to England, where he quickly falls into the clutches of the evil Professor Moriarty.

• 
  Roy William Neill

• 
  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)
• 
  Harold De Becker
  Peg Leg (uncredited)
• 
  Paul Fix
  Mueller (uncredited)
• 
  Henry Victor
  Professor Frederic Hoffner (uncredited)
• 
  John Burton
  RAF Officer (uncredited)
• 
  Paul Bryar
  Swiss Waiter (uncredited)
• 
  Whit Bissell
  London Bobbie (uncredited)
• 
  Rudolph Anders
  Braun (uncredited)
• 
  Colin Kenny
  Scotland Yard Detective (uncredited)
• 
  George Burr Macannan
  Gottfried (uncredited)
• 
  Harry Woods
  Kurt (uncredited)