When Lynette White was murdered in Cardiff, there was some evidence pointing toawrds a white man as a killer; and many years later the suspect was found, and ultimately pled guilty in court. But in the meantime, the police arrested five random black men, concocted a story about a ritual killing, bullied a confession out of one of the accused, and ignored the evidence that another had thirteen abilis. Three of the five were convicted before being freed on appeal two years later; even those freed spent two years on remand. Watching this series about this sorry episode, what's shocking is not just that the justice system got it wrong, but the sheer preposterousness of the allegations. The centrality of racism to the story seems incontravertible; otherwise it makes no sense whatsoever, and the end of the programme makes it clear that the men have all had their lives badly damaged by what they went through. If you watch lots of police dramas where it seems impossible for the good cops to get a conviction, watch this and understand why protection for the accused is absolutely necessary.