Watch Night Key

Mild-mannered inventor David Mallory has spent 20 years perfecting a top-of-the-line security system, just to have it stolen by a gang of burglars who kidnap him and force him to help them commit their robberies.

Night Key is a 1937 suspense movie with a runtime of 1 hour and 8 minutes. It has received moderate reviews from critics and viewers, who have given it an IMDb score of 6.3.