(1992) Narborough station, town where Lynda Mann and Dawn Ashworth resided; Lynda Mann was raped and murdered in 1983 forensic scientists took semen samples, but couldn't find a murderer. In 1986 Dawn Ashworth was murdered a similar way. Police were convinced that the same assailant had committed both murders, and the FSS recovered semen samples from Dawn's body that revealed her attacker had the same blood type as Lynda's murderer. Colin Pitchfork was arrested and his DNA profile was found to match with the semen from both murders. He was eventually sentenced to life imprisonment for the two murders in 1988.