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Gilligan (Bob Denver) is unable to convince the Skipper (Alan Hale Jr.) that he has seen a ghost. Before long, however, everyone believes Gilligan's story, as the ghost goes on a full-scale haunting rampage. Fighting fire with the fire, Gilligan and company cook up a scheme to scare the spectre away for good. Richard Kiel, the towering actor best known as "Jaws" in the James Bond films, appears (or is it disappears?) as the troublesome ghost.