The Master Key
- बर्ष: 1945
- देश: United States of America
- विधा: Action, War, Crime
- स्टुडियो: Universal Pictures
- कीवर्ड: movie serial
- निर्देशक: Lewis D. Collins, Ray Taylor
- जात: Milburn Stone, Jan Wiley, Dennis Moore, Addison Richards, Byron Foulger, Maris Wrixon