For over four decades the brutal 1983 murder of Aberdeen taxi driver George Murdoch has remained unsolved, leaving a family without answers and a community wondering if his killer still walks among them. The brutality of the crime is underscored by the unusual weapon used in the murder, a cheesewire.

Presented by journalist Kirsty Wark and narrated by Unforgotten star Nicola Walker, this documentary delves into the details of the crime, exploring the significant advancements in forensics that have led to a major DNA breakthrough that could help solve the case.