"MICHAEL SHANE, DETECTIVE STEPS OUT WITH A BLONDE...AND GETS KNOCKED FOR A LOOP BY A BRUNETTE!"
Newspaper reporter Tim Rourke keeps writing articles that attack the police department for its failure to solve a chain of murders, which nearly leads to the reporter's death. He calls in private detective Michael Shayne, who turns up a blonde and a blackmailer.

Michael Shayne
Phyllis Hamilton
Inspector Pete Rafferty
Helen Porter
Walter Bronson
Dillingham 'Dilly' Smith
Tim Rourke
Hank Brenner
Chief of Police Will Gentry (as Charles Wilson)
Muriel Bronson
Minerva Dickens