The Master Key
- Godina: 1945
- Country: United States of America
- Žanr: Action, War, Crime
- Studio: Universal Pictures
- Ključna riječ: movie serial
- Direktor: Ray Taylor, Lewis D. Collins
- Uloge: Milburn Stone, Jan Wiley, Dennis Moore, Addison Richards, Byron Foulger, Maris Wrixon
