Night Key is a 1937 film about an inventor of a new top-of-the-line burglar alarm system who is kidnapped by a gang in order to get him to help them commit robberies.
- Directed by Lloyd Corrigan. Written by Tristram Tupper.
- This city is at the mercy of a gang of criminals led by a man who calls himself "The Kid," and I'm the only one who can find him for you.
- David Mallory: You haven't changed have you? Well I have. Steve, you're going to put in my system whether yopu like it or not.
- Steve: I doubt it.
- David Mallory: You forget, what I create I can destroy.