Overview:In Washington D.C., the gang gets locked up in the Smithsonian Institute for the night. This institute, if you don't know, is chock full of antiques, inventions, and of course Ghosts!
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First Air Date: Sep 11, 1976Last Air date: Dec 23, 1978Season: 3 SeasonEpisode: 40 EpisodeRuntime: 25:14 minutesQuality: HDIMDb: 2.5 / 10 by 18 usersPopularity: 45.832Language: en
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