TV Guide Investigation Discovery Sunday

A case in which a police officer was found dead in Illinois, putting the town on lockdown. Shortly afterwards, sordid details of the deceased cop's secret life began to emerge

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 Texas socialite Doris Angleton, who was shot dead in her home in April 1997. Detectives initially believed her death was linked to her husband's bookmaking business. However, it was soon discovered that she had her secrets - such as an affair that began in internet chatrooms

When the charred remains of Eric Cates and his dog were found in his pick-up truck, police suggested suicide prompting his mother to embark on a long battle for justice. An unidentified assailant randomly murdered Zachary Lamb, who was driving home with his fiancee after an event

Part one of two. The story of 'Bad' Henry Louis Wallace, one of the US's most notorious serial killers. When the body of Brandi Henderson is found in her home in 1994, detective Garry McFadden, the only African American on the North Carolina homicide squad in the 1990s and his team at the Charlotte-Mecklenburg police department were intent on tracking down the murderer