The Ghost & Mrs. Muir - Season 1 Episode 25
Son of the Curse

Jonathan and Candy find a beautiful antique clock locked in the wall of the attic and its decided that the clock should be hung in the front hall and used. The Captain seems delighted with the find and asks if they do intend to start it. Not sure why he is so happy at the thought of getting the clock fixed, Carolyn soon discovers that the clock has a curse on it put on it by a former Gregg. When the clock is started, the last living Gregg will die at midnight and Claymore is convinced that hes a goner.