Father Brown joins the search when a girl who is believed to be radioactive goes missing overnight. But just who is responsible for her disappearance?

The senior partner at Ken’s firm is retiring and Ken is in line for succession. Rachel and Ben try to spice up their sex lives.

An intruder leaves Ken questioning his manliness. Rachel and Ben are moving in together.

Ben and Dale both want to make Rachel’s holiday special and Ken gets stuck in the middle.

Ken is keen to lay down some ground rules for Cuckoo in the Thompson house and proposes a family meeting, but getting his own way has knock-on effects.

Ken is delighted to be picked as a local councillor. Naturally, Cuckoo has some advice.

Dale is determined discover his own path in life and alights on Cuckoo’s potato van in an effort to follow in his father’s footsteps. Rachel is still with boring boyfriend…

Dylan decides to leave university after only three weeks. Ken and Dale head there to keep him away from home at all costs.

It’s the day of baby Sid’s naming, and another new Thompson causes havoc in the family. Meanwhile, Dale struggles with his feelings about Ling.