First Broadcast 2 September 2001
Barnaby and Troy think stories of flying saucers are a smoke-screen for murder, but extra-terrestrial expert Lloyd Kirby is convinced otherwise. Lloyd is brought in for questioning but former diplomat Sir Christian Aubrey vouches for his honesty.
A post mortem confirms electrocution, but the victim is a London criminal with no interest in the countryside or aliens. Then the body of a local burglar is found in the crop circle with an identical set of injuries...