- Country: USA
- Genres: Adventure, Crime, Drama
- Release: 1943-02-12
- Director: Roy William Neill
- Writers: Edward T. Lowe Jr. , Scott Darling , Edmund L. Hartmann , Arthur Conan Doyle (1859–1930)
- Language: English | French | Indonesian
- Stars: Basil Rathbone , Nigel Bruce , Lionel Atwill , Kaaren Verne , William Post Jr. , Dennis Hoey , Holmes Herbert , Mary Gordon , Rudolph Anders , Ted Billings
- Runtime: 68 min
- Awards: N/A
- AKA: Sherlock Holmes: Die Geheimwaffe (Germany) , Die Geheimwaffe (Germany) , Sherlock Holmes and the Secret Weapon , Sherlock Holmes and the Secret Weapon (United States of America) , Sherlock Holmes et l'Arme secrète (France, French Republic) , Sherlock Holmes e a Arma Secreta (Brazil) , Sherlock Holmes: Tajna broń (Poland) , Sherlock Holmes y el arma secreta (Spain) , Sherlock Holmes och det hemliga vapnet (Sweden) , Tajná zbran (Czech Republic) , Sherlock Holmes és a titkos fegyver (Hungary) , Sherlock Holmes e a Arma Secreta (Portugal, Portuguese Republic) , Sherlock Holmes and the Secret Weapon , Sherlock Holmes and the Secret Weapon (India) , Sherlock Holmes Fights Back (United States of America) , Sherlock Holmes og det hemmelige våben (Denmark) , Sherlock Holmes y la mira secreta (Mexico) , Sherlock Holmes and the Secret Weapon (United Kingdom) , Шерлок Холмс и секретное оружие , Sherlock Holmes y la mira secreta (Argentina) , Sherlock Holmes - Arma secretă (Romania) , Шерлок Холмс и тайното оръжие (Bulgaria) , L'arma segreta (Italy) , Secret Weapon (United States of America) , L'Arme secrète (France, French Republic) , The Secret Weapon (Australia) , Sherlock Holmes ja salainen ase (Finland) , Sherlock Holmes and the Secret Weapon (Canada) , Sherlock Holmes and the Secret Weapon (United States of America)
- Plot: Sherlock Holmes helps a scientist escape the clutches of the Gestapo in Switzerland and gets him to England. The man has invented a revolutionary new bombsight that will significantly aid Britain's war effort. Now that he's in England he should be safe, right?
- IMDB:tt0035317
Sherlock Holmes and the Secret Weapon Cast · · · ALL
Roy William Neill
Director
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Doctor Watson
Lionel Atwill
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)
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)