Hard-as-nails Detective Inspector Katrina, a divorcee and single mum, is determined to crack the case of the missing boy. But there’s also her drinking, her love life and her inner demons. She doesn’t want help, but it turns up anyway.

The episode was rated 7.02 from 100 votes.

Alan Curtis is a new teacher at a small village primary school in rural Wales. Passionate about teaching, Alan throws himself into the new job but finds himself overshadowed by his charismatic and much-loved predecessor, Mr King.

The episode was rated 7.12 from 113 votes.

Lawrence arranges a reunion with his old university friends at a remote lake. A lot of water has passed under the bridge since then, and as they strike out across the lake, the conversation takes them into choppier waters.

The episode was rated 7.12 from 121 votes.

Shane and Clifford have a plan to abduct the wife of a wealthy hedge fund manager. If he won’t pay them the money, they’ll snip her ears off to prove they mean business. Everything in the plan depends on everyone playing their part right to the end. It’s totally foolproof - isn’t it?

The episode was rated 7.52 from 104 votes.

Helen and her teenage son Zach don’t really get on, until a random act of kindness brings the mysterious Bob to their front door. He seems to understand their problems and offers to help. But what effect will spending time with this kindly stranger have on their lives?

The episode was rated 7.52 from 92 votes.

Everyone remembers the Wise Owl, of course. The bossy cartoon bird keeping children safe back in the 1970s. Those old information films had a lasting effect on all of us - especially Ronnie, who has spent his entire life trying to do the right thing. But what is right? And what is wrong?

The episode was rated 7.64 from 95 votes.