The Murder of Sadie Hartley (2016)

Tells the story of how detectives solved a vicious murder - from the first call to the crime scene, through to the convictions of the killers. In August 2016, Sarah Williams and Katrina Walsh were found guilty of the murder of Sadie Hartley. Cameras follow lead detective Paul Withers and his team as the case unfolds, as they unravel lies told by Williams and discovered her accomplice, Katrina Walsh, who claims to have no memory of the crime.