Season 4

In 1989, two bodies were found in Pembrokeshire - and the answers to their demise lay in the forensics, as a shocking truth was revealed.

When the body of eight-year-old Sarah Payne was found in 2000, police utilised the help of forensic scientists to catch her killer.

Carol Park's body was pulled from a lake more than 20 years after she vanished - and the key to solving the case lay in unique forensics.

The murder of 15 year-old Paige Doherty sends shock waves through Clydebank - and the key to finding her killer lies in the local Deli.

Lynette White's murder led to one of Britain's most infamous miscarriages of justice and an exhaustive forensic investigation.

In 2000, the bodies of three women were found in Birmingham. Could police hunt down the dangerous killer?

In 1986, 16-year-old Elaine Doyle was murdered just metres from her home - but catching her killer was no easy task.

When Teresa De Simone's body was discovered, one man would soon be found guilty - but would forensic science prove his innocence?