An old man is attacked in what appears to be an open-and-shut case of burglary.

Guy Foxton publishes and sells guide books. Unfortunately one of his guided tours crosses the private lands of Les Parnaby. When the police cannot do anything Parnaby decides to take care of the matter himself. It is not the first time Foxton has had a dispute about the right-of-way and PC Bradley kindly suggests that he removes the route from his guide and does not use it anymore, but Foxton is not forthcoming at all. David's and Vernon Scripps' lorry breaks down and PC Ventress gives Vernon a lift back to Aidensfield. On the way Vernon Scripps hits his head when Ventress has to avoid a sheep on the road. That bump changes his personality and makes him a kind, loving person. He even pays all his debts and gives David a two week holiday on his birthday.

Mick Revill has done time for armed robbery, but has kept his nose clean after his release from prison making money as a debt collector. But Neil Boon thinks he goes too far when performing his duties and ask the police to look into it. PC Younger has problems with his lack of authority and reluctantly accepts Revill's offer to train him as a boxer. PC Wetherby attempts to enter him in the upcoming police boxing tournament, but has his plan backfire on him. David gets invited to the centenary celebrations of his old school and Aunt Peggy is determined to make him go. But David doesn't want to especially after meeting one of his old class mates who has really made it big.