Matthew Hoffman

Kacie Woody was groomed online by a middle-aged predator posing as a teenager in Yahoo chat rooms. The case became one of the earliest high-profile examples of internet stalking leading to abduction and murder, helping shape future law enforcement approaches to online child explo ...  Show more

The infamous Long Island Serial Killer case is one of the most disturbing and consequential serial murder investigations in American history. Rex Heuermann was arrested in Manhattan on July 13, 2023, and identified by authorities as the Long Island serial killer. Join Mike and Gi ...  Show more

Theresa Hartley, a Florida native living in St. Augustine, was learning how to live life on her own after her husband passed away several years earlier. On March 11, 2023, she vanished, supposedly while in the company of a friend looking for firewood in the Ocala National Fore ...

When a young woman is found dead in a crashed car, the first thought is a tragic accident. But after investigating the scene, investigators can clearly see this is a homicide. After interviewing friends and family, all signs point to her estranged husband...  but 30 years late ...

When 16-year-old Joseph Kinville III is brutally stabbed to death in a field in his neighborhood in Arcadia, Florida, law enforcement is stumped from the start and his mother is devastated. The mystery only deepens when the teen's estranged father is murdered a few weeks later ...

This episode originally aired on March 24, 2018. On May 26, 1992, 13-year-old Brandy Myers disappeared after she had left her apartment to go door-to-door for a school fundraiser. Many years went by with no good leads until the Canal Killer was apprehended for two murders. Is ...