The film begins with a cop visiting his girlfriend. While this sounds innocent enough, it isn't---she's in a gambling dive. Why she's there and manipulates him into being there soon becomes evident when the police raid the place—and she sets him up to be killed! It seems that she is a real black widow of a woman! The dead man's partner happens to be the police Captain's son and the son decides to investigate the supposed 'accidental killing' by going undercover—way undercover. He pretends to show dissatisfaction with the police force and gets himself fired. Then, he goes to work for the baddie (John Miljan) in order to determine what really happened to his friend.
Aside from a REALLY dumb scene at the 50 minute mark, the film is actually pretty enjoyable as a cheap B-movie. This dumb scene is a cliché I HATE to see in movies—when someone threatens the big boss-man—telling the guy that they'll expose him for what he is. In 100% of the cases, the person making the threat is dead within about 3 seconds—and this case is no different. Think about it—your boss is completely evil and is responsible for countless atrocities and you tell him, when you two are alone, that you're going to the cops!! That's like telling Hannibal Lector that you are the other white meat! You KNOW what's bound to happen and it won't be good!!! But, brain-dead cliché or not, the film is interesting and a decent time-passer.