Britain's Most Evil Killers - Season 9

Experts examine the character and actions of Adam Whelehan who, in 2012, murdered his girlfriend Natalie Jarvis by stabbing her 20 times in the neck.

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.

Across three countries, over four decades, Robert Howard preyed on vulnerable women - leaving two teenage victims dead.

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

Three victims murdered, a string of robberies and a killer with nothing to lose - can the police catch Anthony Russell before he strikes again?

Ten years after Laura May Al-Shatanawi met Hassan Al Shatanawi in Egypt, she became the devoted mother of a little boy, but she vanished without a trace.

After leaving Maria, his bigamous wife, Malcolm Pearson and his innocent fiancé Janet discovered just how dangerous his ex really was.

When Charlotte Murray didn't show up to spend her 34th birthday with her twin sister, their family knew something was seriously wrong.

When two women vanished, the cases weren't connected, until forensic evidence at Derek Brown's home proved their fates were violently intertwined.

When Christopher McGowan was bailed to Claire's home after yet another offence, the innocent woman became trapped in the orbit of a violent man.