Night Key 1937 colorized (Boris Karloff)

The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to force him to help them commit robberies.

Boris Karloff as David Mallory
Warren Hull as Jim Travers
Jean Rogers as Joan Mallory
Alan Baxter as John Baron aka The Kid
Hobart Cavanaugh as Petty Louie
Samuel Hinds as Stephen Ranger
David Oliver as Mike Callahan
Ward Bond as Fingers