The Master Key
- År: 1945
- Land: United States of America
- Sjanger: Action, War, Crime
- Ettromsleilighet: Universal Pictures
- Nøkkelord: movie serial
- Regissør: Lewis D. Collins, Ray Taylor
- Cast: Milburn Stone, Jan Wiley, Dennis Moore, Addison Richards, Byron Foulger, Maris Wrixon
