The foot and mouth epidemic is decimating flocks in North Wales. Evan is so sickened by his job that he takes Bronwen to Swansea, to meet his mother. Disturbing news greets them on their arrival. The boy who shot his policeman father has been released from juvenile detention and has been arrested again for raping and murdering a young girl. Evan feels the need to help out with the case, to make sure the young man goes to jail for good this time. But when he meets Tony, he becomes convinced that the boy didn't do it. Now he has to decide whether to go against his fellow police, his deepest wish and his mother to prove the innocence of a young thug.