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Tony (Larry Hagman) is delighted to learn that he has inherited a 300-year-old mansion in England. He is however less than delighted when the mansion turns out to be haunted. Actually, the "ghosts" are distant relatives who want Tony to sell the estate to them at a rock-bottom price--but, like all those "Scooby Doo" villains, they hadn't reckoned on the intervention of that meddling Jeannie (Barbara Eden).