Opening credits are missing.

Homicide detail. A wealthy spinster ends up dead, and its up to Joe Friday to put an end to a marriage scam.

Joe Friday and partner, Ed Jacobs, are on the job, and interview Miss Wagner in the funeral home to learn about her sister, Dorothy. The spinster tells about the romance that came to her 42 year old sister. She had a healthy portion of the family estate, did something go wrong in the courtship to cause her to take her own life? What kind of a man is Reynolds?

In voiceover, Joe tells that the criminal is new to him, but the marriage racket is an old one. Not much is found from the crime lab, until handwriting experts connect Reynolds to other marriage scams. Can Joe warn the string of women to watch out? Hitting the night scene, Joe and Ed interview nightclub workers, but Reynolds is laying low. . An interview with another jilted woman adds to the mode of operation of our crook.

Other aliases have been uncovered, and the scammer has managed to stay a few steps ahead of the cops. A woman is caught writing rubber checks as the next target of the scammer, and works with the cops to locate Reynolds. The man denies all, until the trail of jilted women gather to point the finger at him.