Thirteen years after their son's racially motivated murder in 1993, Doreen and Neville Lawrence continue their fight for justice. Meanwhile, DCI Clive Driscoll finds Stephen's files and is convinced the cold case can be solved, despite opposition from within the police.

Gary Dobson and David Norris stand trial for Stephen's murder. The defence argue that potential cross contamination in the years since the murder makes forensic evidence unsafe.