Our Toughest Cases

S01E04 In this series, we speak to the officers who relive the toughest cases they've ever faced. Front line officers, Senior Investigators, forensic officers, detectives, family liaison officers and arresting officers, provide first-hand insight into what made each step of the investigation so difficult and why in some cases they took years to solve. The series includes a variety of cases, from serial killers Peter Tobin and Alun Kyte to child killers Beverley Allitt and Mark Bridger, Delroy Grant - a serial rapist and some of the killers of Stephen Murphy in Norfolk who thought they had covered their tracks so well, that they had pulled off the perfect murder. These cases all had seismic repercussions across communities and shook all those involved to the core. These are some of the Toughest Cases theses detectives have ever faced.