In April 1993, eighteen-year-old Stephen Lawrence was stabbed to death by a group of white youths at a bus stop in Eltham, southeast London, while waiting with a friend. This film traces how the Metropolitan Police investigation collapsed almost immediately: evidence mishandled, suspects known to officers left unquestioned for days, and a case that never reached a full conviction until 2012, nearly two decades later. Interviews and archival news footage follow Doreen Lawrence's campaign to force the police and the government to account for what went wrong, a campaign that led to the 1999 Macpherson Inquiry and its finding that the Met was institutionally racist. The film sets the murder against the racial tensions of early-1990s Britain and shows how a private family tragedy became a public reckoning that changed policing policy and race relations debate in the country. It closes on the unfinished business of the case: two of the original suspects still uncharged, and a mother still pressing for answers.