Visiting Brighton with the Causton Chamber of Commerce, Barnaby becomes embroiled in a case of dubious real-estate deals, missing swords, and ancient family history.
Local farmer Geraldine Merrick suspects vandalism when crop circles appear in her fields, but a UFO enthusiast, Terry, is convinced it is the work of aliens. Peter believes Terry's neglected son and friends know more than they're saying about the mysterious circles.
