
Jordan Monaghan: After killing his two children, Jordan Monaghan played the grieving father well. But a third death in 2019 saw detectives finally close the net. (S8, ep 3)

Christopher Halliwell: A look at the convicted double-murderer responsible for taking the lives of Becky Godden-Edwards in 2007 and Sian O'Callaghan in 2011.

Harry Jarvis: When Carol Jarvis vanished, doubts grew over her husband Harry's story - and sinister letters he sent his mistress did little to support his lies. (S8, ep 1)

Harry Jarvis: When Carol Jarvis vanished, doubts grew over her husband Harry's story - and sinister letters he sent his mistress did little to support his lies. (S8, ep 1)

Jordan Monaghan: After killing his two children, Jordan Monaghan played the grieving father well. But a third death in 2019 saw detectives finally close the net. (S8, ep 3)

Jordan Monaghan: After killing his two children, Jordan Monaghan played the grieving father well. But a third death in 2019 saw detectives finally close the net. (S8, ep 3)

Danville Neil: After killing Billy Bryan and Annie Castle, Danville Neil escaped justice for 30 years. But advances in forensics helped convict Neil in 2020. (S8, ep 4)

Danville Neil: After killing Billy Bryan and Annie Castle, Danville Neil escaped justice for 30 years. But advances in forensics helped convict Neil in 2020. (S8, ep 4)

Nicholas Burton: In 1997, Nicholas Burton murdered Rachel McGrath before abducting a student. After a complex trial, the killer was handed three life sentences. (S8, ep 5)

Nicholas Burton: In 1997, Nicholas Burton murdered Rachel McGrath before abducting a student. After a complex trial, the killer was handed three life sentences. (S8, ep 5)

Graham McGill: Mary McLaughlin's violent death haunted Glasgow detectives, with no witnesses and no forensic leads - but new techniques revealed a killer. (S9, ep 4)

Graham McGill: Mary McLaughlin's violent death haunted Glasgow detectives, with no witnesses and no forensic leads - but new techniques revealed a killer. (S9, ep 4)

Mark Bridger: In 2012, April Jones disappeared from outside her home in Wales, never to be seen again. Her abductor, and murderer, was found to be Mark Bridger.