Mulder and Scully rush to find an on-the-run William while the Cigarette Smoking Man pushes forward with his ultimate plan.
Quest roles:
William B. Davis(Cigarette Smoking Man), James Pickens Jr.(Alvin Kersh), Annabeth Gish(Monica Reyes), Joel McHale(Tad O'Malley), Barbara Hershey(Erika Price), Alan C. Peterson(Mr. Y), Miles Robbins(Jackson Van De Kamp / William), Sarah Jeffery(Brianna Stapleton), Zak Santiago(Mr. Green), Ben Cotton(Mr. Paulsen), Madeleine Arthur(Sarah Turner), West Duchovny(Maddy)