Under the Dome/The Enemy Within
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The Enemy Within is the thirteenth episode of the third season of Under the Dome, and the thirty-ninth episode overall.
Starring: Mike Vogel (Dale "Barbie" Barbara), Rachelle Lefevre (Julia Shumway), Alexander Koch (James "Junior" Rennie), Eddie Cahill (Sam Verdreaux), Colin Ford (Joe McAlister), Mackenzie Lintz (Elinore "Norrie" Calvert-Hill), Kylie Bunbury (Dawn)