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When a pair of teenage girls attack one another, each believing the other to be a monster, Mulder and Scully find that their investigation could possibly lead back to their long-lost son, William.
First Air Date : Sep 10, 1993
Last Air date : Mar 21, 2018
Episode : 218 Episode
Season : 11 Season
Runtime: 45:14 minutes
Studio: FOX
Country: United States of America