This is a very typical sort of B-movie plot. And, like all true Bs, this one clocks in at about an hour, as B-movies were intended as a short film to accompany the main feature.
When the film begins, Dustin Hotchkiss (Regis Toomey) is seeking a job as a reporter. However, no one wants to talk to him so he does what any spunky B-movie reporter does--he takes someone else's story and runs with it. He is surprised, however, when this phone call leads to him being at the scene of a murder! At first the police think the DA's daughter killed the DA but it turns out he was shot from outside...and Dustin probably saw the assailant. What follows is very familiar-- with the reporter not only being smarter than the police but solving the crime practically by himself!
While there's nothing bad about the film there also isn't all that much great about it either. Entertaining but familiar and unsophisticated viewing. The only really remarkable thing is seeing Boris Karloff playing one of the baddies just before he shot to international fame as the Frankenstein monster.