World-leading forensic scientist Dr Angela Gallop and her team reveal how they unpicked the clues that finally brought the killer of Rachel Nickell to justice.

World-leading forensic scientist Dr Angela Gallop and her team unlock the forensic secrets which finally solved one of Britain's most controversial cases - the murder of Lynette White.

In the last episode of the series unlocking the secrets that finally solved some of Britain's most controversial murder cases, the programme looks at the killing of Stephen Lawrence. The racist murder of Stephen in southeast London in 1993 remained unsolved for more than a decade after a series of failures by police - that is, until world-leading forensic scientist Dr Angela Gallop and her team were brought in by a new investigation to look again at the evidence.