Overview: Simon Toyne visits a quiet community in Northern Ireland to explore a double murder with Clare Mackintosh which has close parallels to her bestselling novel "Let Me Lie"
Overview: Simon Toyne goes to the state of Oregon in the US, where an incredible real-life case of multi-generational murder influenced Tess Gerritsen's book "Body Double".
Overview: Simon Toyne is invited by Mason Cross to his hometown of Glasgow to uncover a case that literally unfolded on his doorstep.
Overview: Simon Toyne is invited to Yorkshire by Peter Robinson the setting for his DCI Banks series, where he reveals the largely untold story of 14-year-old stabbing victim Elsie Frost.
Overview: Simon Toyne is introduced by Karin Slaughter to the case of 'Casanova Killer' Paul John Knowles who terrorised the US, and who came within miles of her home.
Overview: Simon Toyne is taken by Sophie Hannah to Nottingham to explore the murder of 16-year-old Collette Aram in 1983, the very first case featured on 'Crimewatch'.