Blackstream is a prison riddled with drugs, and a cloud of suspicion hangs over some of the officers. Sister Pat struggles with Harry, an old-timer in a fast-changing prison world, who carries a fatal secret.
Blackstream is riddled with drugs and a cloud of suspicion hangs over some of the officers. Harry refuses to be put in isolation when his HIV status gets out. Louisa crosses the line with Kevin and rumours about their relationship quickly spread through the prison.