TV Guide Investigation Discovery Tuesday

The case of a serial arsonist who murdered four people in a California store. Two fire detectives took a special interest in the case in a bid to find the killer and someone got burnt when the truth was revealed

Seventeen-year-old Steven Willis was working in a mechanic's shop when a horrific murder rocked his family. Haunted by survivor's guilt, Steven embarked on a journey to bring the killer to justice - though three more people died before he learned the truth

Buying goods from the comfort of home

Buying goods from the comfort of home

Buying goods from the comfort of home

Buying goods from the comfort of home

The case of TV news presenter Jodi Huisentruit, who went missing in June 1995. Outside her home in Iowa, officers found evidence of a struggle near her car, with some of her personal items - including her keys - found strewn in the vicinity

A case in which a saddle-maker in the cowboy town of Emmett, Idaho, was beaten to death. Investigators and locals united to uncover layers of betrayal and deceit surrounding DL Carpenter's demise

The case of 51-year-old park ranger James Morgenson, who vanished while on duty in July 1996. His remains were found nearly five years later when it was surmised he had fallen through a snow drift, dying of associated injuries and hypothermia. His remains were washed down a creek and into a small cascade where they remained hidden for some time