An elderly inventor is cheated for the second time when he tries to sell his new alarm system to a burglar alarm company. He then invents a device that hoodwinks their current alarm system in order to force them to install his new invention.
So what do you do with a horror actor when horror has fallen out of favor? 1937 was one of the lousiest years for horror movies, and so that's why we found Boris Karloff as a lovable and distinctly non-threatening grandfatherly type in what is a fairly standard crime melodrama with touches of science fiction. Oddly, it opens like many of his horror movies do, only in those movies his revenge was much more sinister; here, he breaks into stores to set up harmless practical jokes which nonetheless display his ability to subvert the alarm system. It's a decent enough little film, well acted by all (especially Karloff), but it was really too minor a film to effectively open up a whole new genre of film for Karloff. Fortunately, horror would be back in a couple of years, and he would find himself in much more demand. The movie also features Ward Bond as one of the gangsters.