The Aftermath: 6

When celebrity dog trainer Mark Stover disappeared from his home in Washington State, leaving behind a scene covered in blood, no one knew if Mark was the victim or the perpetrator. As detectives unraveled the clues, they discovered a twisted story fueled by a love triangle betwe ...  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

Join 48 Hours correspondent Peter Van Sant for "Trained to Kill: The Dog Trainer, the Heiress, and the Bodyguard," a gripping six-episode podcast that unravels a dark story — Mark Stover was a talented dog trainer, better known as the dog whisperer of the Pacific Northwest. He wa ...  Show more

Detectives finally arrest a suspect in the Hargan family murders. But at trial, defense attorneys present a new theory for how the killings might have happened. According to one scenario based on a forensic specialist's digitally reconstructed crime scene, Helen could have reache ...  Show more

Mark Stover was a talented dog trainer, better known as the dog whisperer of the Pacific Northwest. He was charismatic and attracted the attention of wealthy blonde heiress Linda Opdyke. They built a business together, along with a marriage. But Linda said Mark also had a dark si ...  Show more

A young couple was murdered during what appeared to be a drug deal gone awry. The victims' dog eventually led police to the killer.To learn more about how HLN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices Hos ...  Show more