Valuable pearls are missing, and Inspector Farraday thinks his favorite suspect did it. He’s out to prove that Blackie did it with a vengance. If Blackie didn’t steal the pearls, then why does he have them on his person? Shorty has some explaining to do. A gangster named Duke comes around looking for the pearls, and isn’t opposed to taking them by force. Evading the thug, blackie is soon picked up by Farraday, this time for murder. Blackie makes a break from the cops, and right into the hands of more gangsters.
All Blackie has to do is hand the pearls over, and he’s free to go. Too bad he hid them. Now the criminal has to visit the police station to swipe the pearls from under the nose of Farraday. It all plays together to deliver the bad guys into the hands of the cops and solve Farraday’s mystery for him.