He's in the middle of a mystery. Without a clue.Figuring the answers to the mystery lie in the old Simmons mansion, so Luther Heggs (Knotts) visits the estate at the witching hour of midnight. Certain he's seen a ghost, Luther writes a story whichmakes front page news-and brings on a libel suit from the mansion's owner. When the trial judge orders an investigation=and no apparition appears-Luther is branded a fraud. That is, until he and his devoted girlfriend team up to uncover the mystery of the hauntings-and the true murderer-in this timeless comedy classic.