Actor Lloyd Corrigan took a turn directing this little-seen but fun thriller that casts Boris Karloff as elderly inventor David Mallory, who has created a new state-of-the-art burglar alarm that former rival Steven Ranger(played by Samuel Hinds) has bought, but maliciously refuses to put on the market, ruining Mallory because he had married a woman that Ranger had loved. Furious, Mallory plans revenge by preventing the alarms going off in Ranger's stores during minor thefts, but this brings on the unwanted attention of gangsters, who kidnap Mallory's daughter Joan(played by Jean Rogers) to force him to work for them. Pretty good film has a sympathetic performance by Karloff and a good pace, with imaginative story. Deserves to be better known.
Review of Night Key
