sentences:  While in the service of SO11, the criminal intelligence division of Scotland Yard, Denton committed several violent crimes including the sexual assault of a 15-year-old schoolgirl on 19 December 1994 but on 1 February 1995, the rape charge was dropped due to lack of evidence.The following April, Denton stabbed 24-year-old trainee beautician Marcia Lawes 18 times after breaking into her Brixton residence and sexually assaulting her.Although initially arrested by police on 28 June, he was released due to lack of evidence on 1 November 1995.