David Duchovny FBI Special Agent Fox Mulder Actor Gillian Anderson FBI Special Agent Dana Scully Actor Mitch Pileggi Asst. Dir. Walter Skinner Actor Nicholas Lea Alex Krycek Guest Star Alex Shostak Jr. Dmitri Guest Star Laurie Holden Marita Covarrubias Guest Star Veronica Cartwright Cassandra Spender Guest Star Jim Jansen Dr. Heitz Werber Guest Star Chris Owens FBI Special Agent Jeffrey Spender Guest Star Don S. Williams Elder 1 Guest Star John Neville Well-Manicured Man Guest Star Willy Ross Quiet Willy Guest Star Brian Thompson Alien Bounty Hunter Guest Star George Murdock Elder 2 Guest Star Chapelle Jaffe Dr. Patou Guest Star Michal Suchánek Young Jeffrey Spender Guest Star Jack Finn Young Boy Guest Star John Moore 2nd Elder Guest Star Chris Carter Executive Producer, Writer, Director Frank Spotnitz Writer