Episode 1

The police investigation has never closed but the murderer's identity has remained a mystery since 1983, the killer quite literally disappearing into the night. Now, over forty years later, there is a glimmer of hope – a DNA profile from preserved crime scene evidence that police believe belongs to George's killer.
With exclusive access, this series offers a rare glimpse into the inner workings of a cold case investigation, revealing the painstaking efforts to piece together fragments of the past to help solve the crime in the present.

Detectives from the eighties onwards have been haunted by this case; George Murdoch's killer is the one that got away. The police of the past, however, were hampered by the lack of CCTV and mobile phone evidence – resources indispensable to a modern-day inquiry. Despite conducting 10,000 house-to-house inquiries and recording 7,000 statements, the killer has remained beyond their grasp.

But now the net is closing, and the public have a vital role to play. The killer's DNA hasn't matched to a profile on the national database, but detectives have the next best thing – a list of possible blood relatives that could lead them to the door of a murderer.