Sergeant Craddock attends dancing classes to keep up his dancing skills. He also has something of a soft spot for the dancing teacher Susan Finlay. That friendship is put to the test when her son Richard drives through Aidensfield like a regular Jackie Stewart and refuses to stop when the police want to give him a speeding ticket. Craddock lets him off with a warning, but the following night a little boy is run down by a hit-and-run driver, who may very well be Richard driving in her car. Lord Ashfordly is forced off the road by Richard's reckless driving. The petrol tank of his Bentley gets punctured in the incident and he takes it to Bernie's garage. But Bernie is out of town for a few days and Vernon becomes an instant expert on Bentleys when his lordship needs his car back badly.

There is a new bobby in Aidensfield. Steve Crane will replace PC Bradley, who has been transferred to CID. Crane is not the only newcomer in the village. Dr. Liz Merrick moves in at the surgery as the new GP in Aidensfield. She is concerned about the loss of patients since her predecessor died, but Vernon Scripps offers to deliver a letter from her to every potential patient in the village. Two neighbouring farms have been broken into, but the owners Jack Farrow and Walter Rawlins say the break-ins are mere trifles and not worth any police attention. PC Crane does not agree and suspects they cover something up. Gerald Dunphy is wanted for armed robbery and Mike's first case as a detective constable is to keep an eye on his girlfriend in case he shows up.