David Duchovny FBI Special Agent Fox Mulder Actor Gillian Anderson FBI Special Agent Dana Scully Actor Mitch Pileggi Asst. Dir. Walter Skinner Guest Star William B. Davis Cancer Man Guest Star Steven Williams Mr. X Guest Star Sheila Larken Margaret Scully Guest Star Melinda McGraw Melissa Scully Guest Star Don S. Davis Captain William Scully Guest Star Jay Brazeau Dr. Daly Guest Star Nicola Cavendish Nurse Owens Guest Star Lorena Gale Nurse Wilkins Guest Star Bruce Harwood John Fitzgerald Byers Guest Star Dean Haglund Richard "Ringo" Langly Guest Star Tom Braidwood Melvin Frohike Guest Star Michael Ryan Overcoat Man Guest Star Tegan Moss Young Dana Scully Guest Star Glen Morgan Writer James Wong Writer R.W. Goodwin Director