Special Guest Stars Mimi Rogers as Agent Diana Fowley Guest Stars Mitch Pileggi as Assistant Director Walter Skinner William B. Davis as Cigarette-Smoking Man Tom Braidwood as Melvin Frohike Bruce Harwood as John Fitzgerald Byers Dean Haglund as Richard "Ringo" Langly Nicholas Lea as Agent Alex Krycek Don S. Williams as Elder #1 Chris Owens as Special Agent Jeffrey Spender John Neville as Well-Manicured Man Jeff Gulka as Gibson Praise George Murdock as Elder #3 Michael Shamus Wiles as Black-Haired Man Martin Ferrero as Assassin Co Starring John Moore as Elder #2 Paul Moniz de Sa as Clinician #2 John Trottier as Clinician #3 Orest Blajkevitch as Russian Patrick J. Phillips as Clinician #1