Merton suspects explosives from a local airfield are linked to a robbery but his hands are tied when a DI pulls rank. Vernon sees a money-spinner when David enters a unique plant in the Aidensfield flower show.

When an ex-army officer is found dead in his home, suspicion is cast on his money-hungry wife. And Rosie ends up with more admirers than she bargained for when she goes on a blind date.

Bellamy and Walker hunt for a batch of stolen Russian icons, and suspect the victim of an assault at the Aidensfield Arms might be involved when they discover his criminal connections. Vernon embarks on another harebrained scheme when he meets an Italian truffle salesman, while Helen is puzzled by a youngster's baffling medical history.

PC Walker receives a tempting offer from an old friend, but as the proposition involves a spot of rule-bending on his part, the decision to go through with it could land him in serious trouble, especially as Sergeant Miller already seems less than impressed by the policeman's rebellious nature.