Cub reporter Dusty investigates the murder of the District Attorney and stumbles into a plot involving a kidnapping and a crooked election.
Boris Karloff was shooting this movie when James Whale, director of Frankenstein (1931), spotted him eating lunch in the Universal commissary. Whale saw Karloff's height and rather boxy head and decided to offer him a test for the role of the Monster in "Frankenstein," which became Karloff's star-making role.
The first name of the district attorney changes several times during the film. He is Carter Harrison in the opening credits, Martin Harrison on the door to his office, Carter again in the newspaper headlines announcing his murder, Martin in the final scenes and Carter in the closing credits.