TV Guide Investigation Discovery Saturday

Britney Cosby and her girlfriend Crystal Jackson were looking forward to spending their future together. After their brutal murder in 2014, everyone around them became a suspect. Eventually Britney's father James Larry Cosby was found guilty of the crime, his apparent motive being that he didn't like the fact his daughter was gay

The case of Joyce Alexander, who was terrified of her son William Patrick, fearing he held her responsible for a horrifying crime he had carried out. Twenty-five years on, she became convinced he was plotting his revenge from prison

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 murder of California attorney Larry McNabney in September 2001. A US-wide manhunt was launched to locate his wife Elisa Redelsberger, who it transpired was actually Laren Sims who had served time for fraud and identity theft

Ben Butler, who killed his young daughter Ellie while in a rage. Along with his wife, former EastEnders actress Jennie Gray, he faked the detailed he passed in an emergency services call and later protested innocence

The murder of 16-year-old Bristol student Becky Watts. When she vanished in February 2015, suspicion fell on her step-brother Nathan Matthews and his partner Shauna Hoare. Experts analyse police interviews for the clues that proved compelling

A case in which two brothers sought justice for their parents' death in a drunk-driving incident. In a retrial, a defendant's brother testified against him for a possible death penalty