Happy Valley

The crew find themselves with a serial killer on the loose; Catherine becomes a suspect after she finds the remains of a body; Tommy keeps a watchful eye over Ryan.

Catherine comes face-to-face with Tommy, while John takes drastic action against Vicki's impending threats.

John begins to get worried when another body is found; Tommy puts pressure on Frances to try harder to upset Catherine and make her life difficult.

Ryan receives a mysterious gift on his tenth birthday; Catherine is reminded that danger is closer than she thinks.

Ryan's interest in Tommy seems a bit suspicious, and Daniel thinks somebody at school might be responsible.

Catherine makes an arrest after a gruesome discovery. She learns the true identity of Drummond and reveals the truth about Royce. Tormented, John takes desperate measures, while Catherine closes in on Vicky's killer.