Stephen Lawrence's family rocked by new claims
6 March 2014 Last updated at 22:32 GMT
The family of murdered teenager Stephen Lawrence have spent more than two decades campaigning for the full truth about his death and the police's handling of the case.
Now a report has found a Metropolitan Police officer spied on the Lawrence family, and it did not rule out that corruption may have compromised the police's murder investigation.
In response, Stephen's father Neville said he felt he had been "constantly lied to", as Reeta Chakrabarti reports.