
This episode covers the brutal murder of 16-year-old Mhairi Julyan in Kilmarnock, Scotland, by serial offender Gavin McGuire, and the subsequent investigation.
On December 17, 1995, police discovered Mhairi's body after she went missing the night before. She had been sexually assaulted and strangled, shocking the local community. Experts Jane Monckton-Smith and Nikolas Lemos discuss the horrific nature of her death.
The episode details McGuire's criminal history, including previous assaults on women, and how he was identified as a suspect through DNA evidence and CCTV footage. The police launched a massive DNA testing operation, eventually leading to McGuire's arrest.
During the trial, Mhairi's family endured the painful recounting of her final moments. Despite McGuire's claims of innocence, he was convicted and sentenced to 30 years in prison.
The episode concludes with discussions on the implications of McGuire's potential release and the lasting impact of his crimes on victims like Doris Thomson, who survived a previous attack by him.
The episode examines the murder of Mhairi Julyan by Gavin McGuire and the investigation that led to his conviction.

This episode stands out for the following:
He should have been stopped a long time ago.Gavin McGuire | World’s Most Evil Killers
It was a very, very torturous death.Gavin McGuire | World’s Most Evil Killers
I was terrified in case he was still there.Gavin McGuire | World’s Most Evil Killers
I was angry. The anger was in me.Gavin McGuire | World’s Most Evil Killers
I don't think a man like that should be ever released.Gavin McGuire | World’s Most Evil Killers
Nobody ever gets away from me.Gavin McGuire | World’s Most Evil Killers