When a former agent is murdered after a cricket match in Midsomer Parva, Barnaby's past as a spy is revealed. Barnaby links the murder to some spies who operated in Cold War Berlin but finds the investigation harder than he thought.moreless
Andy Harper hangs himself and Darren reveals that they had been lovers. Darren is acquitted of murder, but DCI Connor remains convinced of his involvement in the girl's death.
Then barbiturates are stolen from Raif and Georgina Canning's veterinary surgery and the district nurse is found in her crashed car in a confused state. Barnaby and Troy dash to the Manor, fearing the drugs theft may be connected to the death threats - but they find Melissa is already lying dead by the swimming pool with a syringe in her stomach. Now they have a murderer to find.
Murder strikes at the heart of the University when Dr Felix McClure, a retired college don, is found stabbed to death.
Morse and Lewis suspect Ted Brooks, McClure's old 'scout' (or college servant), who left his job abruptly after one of McClure's pupils committed suicide. Morse discovers that McClure, the suicidal undergraduate, and his room-mate, Ashley Davies, were all in love with the same woman - who was Brooks's daughter.
Morse and Lewis add to their list of suspects when they question the unusually close relationship between Ted Brooks's wife Brenda and the woman she cleans house for, a schoolteacher called Julia Stevens. Julia seems to be protecting Brenda from her husband's abusive behavior - but when Ted is found dead, it seems she may be hiding another kind of secret.