A big amusement park is visiting Aidensfield for the annual fair. Greengrass buys a couple of paintings from two men working at the fair ground and tries to sell them to Alex Ferrenby who believes them to be worth a lot more than the £20 Greengrass is asking for them. He is right! 5-year old Brian Currie who is camping out with his parents at Mrs. Plummer's camp site goes missing. Claire Mercer, a patient of Kate's, suspects her son Michael has something to do with it.

A number of sheep has been savaged or killed, and Inspector Crossley is convinced that a very big cat like a puma is at large in the area. To Blaketon it looks more like the workings of a dog and Greengrass' lurcher Alfred seems to be the culprit. Kate Rowans starts in her new job at Dr. Radcliffe's surgery in Whitby, although she feels as if she is being kept outside deliberately. Not by Dr. Radcliffe himself, but by his receptionist Christine Ferguson. Meanwhile Greengrass has settled his outstanding account with the Inland Revenue in his own, very unique way.

PPC Nicholson responds to a call about a break-in at the Shields Carpet Factory only to find the manager Trevor Shields "working late" with his secretary Maureen Felton. To get even Shields fires the works manager Neville Sawyer, and when an accident happens at the factory Shields blames Sawyer for that as well. But the safety records speak differently and the factory is closed. Vernon Scripps suggests to the local Women's Institute that they organize a beauty pageant, but is immediately opposed by Joyce Jowett who finds the idea revolting. When it is decided to go forward anyway Mrs. Jowett tries to stop it by notifying the police that the pageant is indecent. But Sergeant Craddock will not do anything because it is not illegal. That does not stop the virago however.

Helen and Rob's wedding. Noisy neighbours.