
The Murder of Sarah Payne: When the body of eight-year-old Sarah Payne was found in 2000, police utilised the help of forensic scientists to catch her killer. (S4, ep 2)

Catching the Birmingham Spree Killer: In 2000, the bodies of three women were found in Birmingham. Could police hunt down the dangerous killer? (S4, ep 6)

Murdered Metres From Home: In 1986, 16-year-old Elaine Doyle was murdered just metres from her home - but catching her killer was no easy task. (S4, ep 7)

Murdered Metres From Home: In 1986, 16-year-old Elaine Doyle was murdered just metres from her home - but catching her killer was no easy task. (S4, ep 7)

The Pembrokeshire Murders: In 1989, two bodies were found in Pembrokeshire - and the answers lay in the forensics, as a shocking truth was revealed. (S4, ep 1)

The Pembrokeshire Murders: In 1989, two bodies were found in Pembrokeshire - and the answers lay in the forensics, as a shocking truth was revealed. (S4, ep 1)

The Murder of Sarah Payne: When the body of eight-year-old Sarah Payne was found in 2000, police utilised the help of forensic scientists to catch her killer. (S4, ep 2)

The Murder of Sarah Payne: When the body of eight-year-old Sarah Payne was found in 2000, police utilised the help of forensic scientists to catch her killer. (S4, ep 2)