The Master Key
- Aasta: 1945
- Riik: United States of America
- Žanr: Action, War, Crime
- Stuudio: Universal Pictures
- Märksõna: movie serial
- Direktor: Lewis D. Collins, Ray Taylor
- Osades: Milburn Stone, Jan Wiley, Dennis Moore, Addison Richards, Byron Foulger, Maris Wrixon
