Levi Bellfield is one of the most notorious serial killers in modern British history. In 2002, teenager Milly Dowler was abducted and murdered, but it would be months before her body was found. In the years that followed, two more women were also killed in brutal attacks. Seeing a link between the murders, Colin Sutton launched a murder hunt and eventually brought "the bus-stop killer" to justice.

Beauty consultant Clare Bernal and security guard Michael Pech had only been on three dates when he began a sustained campaign of stalking against her. Eventually, she reported his behavior to the police, and he was arrested. But while out on bail awaiting sentencing for harassment, Pech walked into her workplace and shot the 22-year-old and then turned the gun on himself.