The story of Wigan teenager Louise Sellars, who vanished in 1995. The next day, her body was found in a field near her home, leading to a hunt for a killer in Appley Bridge. Presented by Anita Rani.

Melanie Road, 17, was murdered on her way home from a nightclub in Bath in 1984. She had been out with her boyfriend and friends, but Melanie had been sexually assaulted and brutally stabbed 26 times on her way back home. A milkman found her body the following day.

After multiple lines of enquiries and arrests, the police weren't able to find the killer, and despite recovering a large amount of DNA evidence at the scene, the case went cold. Over the next 30 years, the police continued to review the case and check the DNA database for any matches but no real breakthrough.

There were 100s of potential suspects who were checked against the database but not a match. The real breakthrough came in 2014 when the DNA database returned a familial match, leading the police to married father Christopher Hampton. This man had brutally murdered Melanie on the night in 1984 and had been at large for 30 years.