Final episode in the series for this popular drama tonight. Catherine and Shaf call in at Far Sunderland farm to visit Alison and Daryl, but discover a scene of carnage when they enter the building, with Alison slumped on the dining table covered in blood having taken an overdose. Meanwhile, Andy and Jodie begin to suspect that the person who killed Vicky Fleming could be someone on the team and as the investigation heads towards a conclusion, John's torment increases, leading him to take drastic measures to avoid the consequences of his actions.