Secrets Can Kill is a gripping mystery with many exciting turns and twists. A lot of people have reason to want small-town lawyer Seth Molloy dead. His wife, Debbie, fears that he will destroy her in divorce court. He has compromising pictures of Debbie and her business partner Raymond Sinclair. She insists that they didn't sleep with each other. When Raymond loses money at the tracks, a jealous Seth refuses to help him out. It is no secret that Seth constantly locks horns with his 16-year-old son, Peter. When Detective Frank Logan is called in to investigate Seth's murder, he believes Molloy shot a man seen fleeing from the house. Logan thinks that the robber's accomplice came up from behind and hit Molloy on the head with a poker. Logan's theory is thrown into question, when he discovers that someone sent Seth death threats. When the case unravels, Logan's frustration mounts. He has hit a roadblock. To learn the truth, he must unravel secrets that are best kept hidden.