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