The Hidden Master
- Ár: 1940
- Land: United States of America
- Genre: Documentary, History
- Stúdíó: Metro-Goldwyn-Mayer
- Lykilorð: luck
- Leikstjóri: Sammy Lee
- Leikarar: John Nesbitt, Peter Cushing, Dorothy Granger, Louis Jean Heydt, Richard Nichols, Emmett Vogan
