Kate is concerned for an elderly patient who begins receiving threatening phone calls and reports that someone is lurking outside her house at night. Nick suspects a pompous landowner who is desperate to get his hands on her cottage, whilst Blaketon is certain her ruthless, money-driven son-in-law is their man. Meanwhile, Greengrass takes the law into his own hands when he is nearly killed by a farmer while walking his dog on the moors, whilst Ventress strikes up a bond with a kitten and hides it at the police station.

Blaketon and Nick go after a criminal who thinks he's untouchable when a dim-witted local lad called David Stockwell reports an illegal badger digging ring in the woods and his mother is involved in a hit-and-run accident. Meanwhile, Greengrass' past cons against local shareholders serves as the source of aggravation when he and George buy shares in a racehorse. Elsewhere, Ventress is revising for his Sergeant's exam, and uses it as an excuse to get out of police work.