A Killer Makes a Call - Season 3

The investigation into 46-year-old Sarah Wellgreen's disappearance, which turned into a murder case after police were unconvinced by ex partner Ben Lacomba's story. He told officers that Sarah must have left in the middle of the night. However, police found his account suspicious and an apparently routine missing person inquiry soon turned into a complex murder case.

The case of Raoul Moat, who attacked his ex-girlfriend, killed her new partner, and shot a police officer, before going on the run and leading Britain's law enforcement on a week-long manhunt. Through interviews with detectives, journalists and those caught in the middle of the chaos, this edition unravels the police work that brought the pursuit to its tragic end.

The disappearance of 55-year-old Muriel McKay, who was kidnapped in 1969 and held for ransom after being mistaken as Anna Murdoch, the wife of family friend Rupert Murdoch. Detectives launched what was to become Scotland Yard's first-ever kidnapping investigation. Despite the arrests and eventual convictions of the Hosein brothers, Muriel's body was never recovered.

The story of Debbie Griggs, a pregnant mother of three who vanished from her Kent home.

The 2012 murders of PC Nicola Hughes and PC Fiona Bone that sent shockwaves across the UK.

A crime of staggering brutality, when Joan and Milroy Clarke were found stabbed.

Emma-Jayne Magson's story following the death of her boyfriend would start to unravel.

The chilling story of the murder of 17-year-old Bernadette Walker..