Before the outbreak of WWII, Nazi sympathizers plot to undermine America.
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🔍 Search on JustWatch →The Master Key is an acquired taste at 0.0/10. We recommend checking the trailer and synopsis before diving in.
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A classic from 1945. They don't make them like this anymore — which is exactly why you should watch it. Best for: genre fans and those open to something unconventional.
— MovieFinder Editorial
Milburn Stone
Agent Tom Brant
Jan Wiley
Janet Lowe
Dennis Moore
Jack Ryan
Addison Richards
Gerhard Doenitz / Garret Donahue
Byron Foulger
Prof. Elwood Henderson
Maris Wrixon
Dorothy Newton
Sarah Padden
Aggie
George Lynn
Herman
Russell Hicks
Police Chief Michael J. O'Brien
Roland Varno
Arnold Hoffman
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