Gillian Anderson FBI Special Agent Dana Scully Actor David Duchovny FBI Special Agent Fox Mulder Actor Mitch Pileggi Asst. Dir. Walter Skinner Actor William B. Davis Cigarette Smoking Man Guest Star Alex Carter Chief Strong Guest Star Miles Robbins Jackson Van De Kamp Guest Star Annabeth Gish Monica Reyes Guest Star Ben Wilkinson Dean Cavalier Guest Star Stuart Margolin Dr. They Guest Star Sarah Jeffery Brianna Stapleton Guest Star Andrew Roshkov Commander Al Guest Star James Pickens Jr. Alvin Kersh Guest Star Madeleine Arthur Sarah Arthur Guest Star A.C. Peterson Mr. Y Guest Star Barbara Hershey Erika Price Guest Star Ken Godmere Melvin Peter Guest Star Ben Cotton Mr. Paulsen Actor Aidan Kahn Agent Colquitt Guest Star Lauren Ambrose Agent Einstein Guest Star Robert Mann Hillbilly Ed Guest Star Chris Carter Executive Producer, Writer, Director Glen Morgan Executive Producer, Writer, Director Holly Dale Director Kevin Hooks Director Darin Morgan Writer, Director Carol Banker Director Kristen Cloke Writer James Wong Writer, Director Karen Nielsen Writer Gabe Rotter Writer Benjamin Van Allen Writer Shannon Hamblin Writer