Click here to visit our new site --> CafeDVD 2.0 (1945) Rating: Starring: Addison Richards, Milburn Stone, Dennis Moore, Byron Foulger, Russell Hicks Director: Ray Taylor, Lewis D. Collins Category: Action Classics, Classics Studio: Subtitles: Length: 250     The Master Key is a 1945 adventure serial film centered around a secret agent's mission to uncover a sinister Nazi plot involving a mind control machine threatening the United States. The story unfolds through a series of suspenseful and action-packed chapters aimed to keep audiences on the edge of their seats.