PC Bellamy is in trouble. There was a break-in on his beat while he was visiting one of his girlfriends. Witnesses noticed a noisy minivan speeding away from the scene of the crime immediately afterwards. An anonymous tip leads to part of the loot - and Phil Bellamy's address. Blaketon has no choice but to suspend him from duty. Greengrass notices a fast, black greyhound and spots an opportunity to make a bob or two because it's a dead ringer for ruthless businessman Jack Scarman's somewhat slower dog Northern Flash. If only they can "borrow" it from its owner Mr. Parrish and swap the two.

Colonel Hudson holds an auction and since Aunt Peggy cannot get any more credit at Bernie's garage until she pays her bill she and David takes the soft job of driving for him. Hudson's son Duncan discovers that his young mother is having an affair with the family friend Nigel Parker. Parker gets seriously injured in an accident on his way home from a party at the Hudson estate, and when PC Walker conveys the bad news Duncan runs away. Gina and Phil think that Rob needs to get out some more and invite him and Gina's hairdresser Paula out on a double date. But the constables soon get other things on their minds when the entire police station is infected with nits. And they can only have come from PC Younger who has had lollipop duty at the school.