Trained to Kill: The Dog Trainer, the Heiress...

On March 16, 2009, Rhonda Casto went on a hike in Oregon’s Columbia River Gorge with her boyfriend, Stephen Nichols, only to never return home. Before Casto headed out on her hike, she joked to a friend that Nichols was either “going to propose or kill me”. Somewhere along the tr ...  Show more

In 2016, Nicole Vander Heyden went out with her boyfriend Doug Detrie and friends but never made it home. A day later, she was found beaten and strangled in a field. Wisconsin police used a host of digital tools to try to solve her murder. One device created an alibi. But other t ...  Show more

Mark Stover trained the dogs of the rich and famous. When Linda Opdycke, the daughter of a multi-millionaire, hired him to train her new attack dog, they started combining business and pleasure. Their partnership lasted for more than a decade before disputes between the two rippe ...  Show more

Police arrive at a shooting, and discover the victim's husband is a homicide detective who says his wife shot herself. Investigators turn to a forensic scientist and ballistics expert to learn what really happened and who was responsible.To learn more about how HLN protects liste ...  Show more

In this episode, Payton and Garrett explore the tragic case of Amie Harwick, a therapist found dead after a brutal attack. Detectives uncover evidence of relentless stalking by a former partner. They delve into Amie's past for clues to her tormentor's identity and the motive behi ...  Show more

In 2022, a 25-year-old Hannah Pettey got away with her life and her kids–an extremely lucky end to the situation she was in. Her husband, 36-year-old Brian Mann was charged with attempted murder after authorities say he was trying to poison Hannah with lead. How did Mann get his ...  Show more