While the some of the residents of Midsomer Parva have a particular interest in the appearance of crop circles, the police have a definite interest when the bodies of naked men start appearing in them. Local UFOlogist Lloyd Kirby preaches that extra-terrestrials are at work, but Barnaby looks to more earthly explanations. The first victim, Ronnie Stokes, was a criminal with several serious convictions for assault while the second, Eddie Field, was a local burglar who had only just been released from prison and who may have committed another burglary the night of his death. Both men were electrocuted and were killed elsewhere, with their bodies moved to the crop circles. When a third man is electrocuted, Barnaby must learn of a complex series of events and inter-relationships, some from 40 years previously when two men loved the same woman, to solve the crimes.