The old salt farmers have always said that the violet scent of the Fleur de Sel at harvest time on the salt marshes of the Guérande Peninsula has been known to cause hallucinations. Commissaire Dupin also starts to believe this when he's attacked out of the blue in the salt works. He had actually been looking forward to escaping his endless paperwork and taking a trip to the “white country” between the raging Atlantic Ocean and idyllic rivers....