True crime author Rod Sadler delves into the secrets of one of Michigan's most perplexing murder cases. Offering an in-depth and suspenseful account of the long-standing mystery, he poses the question: Could advanced DNA technology lead to the identity of the Mackinac Island murderer as it did recently in the case of the Golden State Killer? Find out in Grim Paradise: The Cold Case Search for the Mackinac Island Killer.