Season 7, Episode 7
A wall of silence among witnesses and associates plagued the murder investigation of criminal Mark Johnson, who was killed in a fatal fire at London's Union club in 1996. With fresh information suggesting that the blaze was a targeted arson attack, UCOS reopens the case. But does Johnson's legacy of fear live on, and will anyone risk talking to the team?
A motley crew of retired police officers re-opens troublesome cases that were never laid to rest.