An investigation into the death of Mhairi Julyan, a 16 year-old from Kilmarnock, Scotland, who was found dead in a bus depot in 1995 with 47 separate injuries to her head, body and limbs after being strangled and sexually assaulted by Gavin McGuire.

Mary McLaughlin's violent death haunted Glasgow detectives, with no witnesses and no forensic leads - but new techniques revealed a killer.