TV Guide Investigation Discovery Saturday

The murder of best-selling author Helen Bailey by her partner Ian Stewart, who had earlier helped volunteers in her search. The 51-year-old's body was eventually found dumped in a cesspit beneath the garage of her £1.5million home in Royston, Hertfordshire, alongside that of her dog in July 2016. She had been drugged and suffocated

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 Codi Joyce, who died at a house party after a fight in 2015. In light of the fact nobody was ever charged for his murder, the documentary reappraises events of the night

The case of Steven Crittenden, who in 1987 murdered William and Katherine Chiapella during a home invasion. When he confessed to his half-brother, Bryant Jones, and then swore him to secrecy, Bryant faced the toughest decision of his life - whether to keep the secret and risk letting a murderer get away with it, or tell the truth and betray his family

The case of 13-year-old Tabitha Tuders. When she vanished, police suspected she had simply run away. However, disturbing circumstances behind her disappearance left her relatives desperate for the truth

Married student Latrese Curtis was found stabbed to death on the side of Highway 540 in Durham, North Carolina. When detectives uncovered the fact that Latrese had lived a double life, a twisted tale of jealousy, rage, and unrequited love emerged