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"

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".

Simon Toyne is invited by Mason Cross to his hometown of Glasgow to uncover a case that literally unfolded on his doorstep.

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.

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.

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'.