Night Key

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Actors: Boris Karloff , Frank Reicher , Samuel S. Hinds , Ward Bond , Edwin Maxwell , Hobart Cavanaugh , Alan Baxter , David Oliver , Warren Hull , Jean Rogers

Director: Lloyd Corrigan

IMDB Rate: 6.2 out of 10 (193 votes)

Plot Summary:The film concerns an inventor of a burglar alarm, who attempts to get back at the man who stole the profits to his invention before he goes blind. The device is then subverted by gangsters who apply pressure to the inventor and use his device to facilitate burglaries.