• Tagline: ALL LIES LEAD TO THE TRUTH
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner), William B. Davis (Cigarette Smoking Man)
• Guest Starring: Charles Cioffi (Section Chief Scott Blevins), Tom Braidwood (Frohike), Dean Haglund (Langly), Bruce Harwood (Byers), John Finn (Scott Kritschgau)
• Co-Starring: Steve Makaj (Ostelhoff)
• Featuring: Ken Camroux (Senior Agent), Barry W. Levy (Vitagliano), Julia Arkos (Holly), Don S. Williams (Elder)
• Written By: Chris Carter
• Directed By: R. W. Goodwin

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner), William B. Davis (Cigarette Smoking Man)
• Guest Starring: Charles Cioffi (Section Chief Scott Blevins), Sheila Larken (Margaret Scully), Pat Skipper (Bill Scully, Jr.), Megan Leitch (Samantha Mulder), Tom Braidwood (Frohike), Dean Haglund (Langly), Bruce Harwood (Byers), John Finn (Scott Kritschgau)
• Co-Starring: Robert Wright (Dr. Zuckerman), Ken Camroux (Senior Agent)
• Featuring: Don S. Williams (Elder), Arnie Walters (Father McCue), Brent Sheppard (Doctor)
• Written By: Chris Carter
• Directed By: Kim Manners

• Tagline: THE TRUTH IS OUT THERE
• Special Appearance By: Richard Belzer (Detective Munch)
• Guest Starring: Signy Coleman (Susanne Modeski), Bruce Harwood (Byers), Tom Braidwood (Frohike), Dean Haglund (Langly), Steven Williams (X)
• Featuring: Chris Nelson Norris (SWAT Lieutenant), Glenn Williams (Officer), Stuart O'Connell (1st SWAT Cop), Ken Hawryliw (Himself)
• Written By: Vince Gilligan
• Directed By: Kim Manners

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Colleen Flynn (Michele Fazekas), J.C. Wendel (Agent Stonecypher), Scott Burkholder (Agent Kinsley), Merrilyn Gann (Mrs. Asekoff), Anthony Rapp (Jeff Glaser)
• Featuring: Alfred E. Humphreys (Michael Asekoff), Tom Scholtz (Michael Sloan), Tyler Thompson (Louis Asekoff), Simon Longmore (Marty Fox)
• Written By: Frank Spotnitz
• Directed By: Brett Dowler

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: John O'Hurley (Dr. Pollidori), Pattie Tierce (Shaineh), Stewart Gale (Izzie), Chris Giacoletti (Booger), Chris Owens (Mutato), Dana Grahame (Newspaper Reporter), Jean-Yves Hammel (Goat Boy), Tracey Bell (Cher), Lloyd Berry (Old Man), Miriam Smith (Elizabeth Pollidori), Xantha Radley (Waitress), C. Ernst Harth (Huge Man)
• Co-Starring: Jerry Springer (Himself)
• Written By: Chris Carter
• Directed By: Chris Carter

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Sheila Larkin (Mrs. Scully), Melinda McGraw (Melissa Scully), Pat Skipper (Bill Scully Jr.), Karri Turner (Tara Scully), John Pyper-Ferguson (Detective Kresge), Gerard Plunkett (Dr. Calderon), Lauren Diewold (Emily Sim), Patricia Dahlquist (Susan Chambliss), Rob Freeman (Marshall Sim)
• Featuring: Eric Breker (Dark Suited Man #1), Stephen Mendel (Dark Suited Man #2), Walter Marsh (Pathologist), Rebecca Codling (Young Melissa Scully), Joey Shea (Young Dana Scully), Ryan Deboer (Young Bill Scully, Jr.)
• Written By: Vince Gilligan & John Shiban & Frank Spotnitz
• Directed By: Peter Markle

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: John Pyper-Ferguson (Detective Kresge), Sheila Larkin (Mrs. Scully), Pat Skipper (Bill Scully Jr.), Karri Turner (Tara Scully), Bob Morrisey (Dr. Vinet), Gerard Plunkett (Dr. Calderon), Patricia Dahlquist (Susan Chambliss), Lauren Diewold (Emily Sim), Tom Braidwood (Frohike)
• Co-Starring: David Abbott (Judge Maibaum), Sheila Paterson (Anna Fugazzi)
• Featuring: Eric Breker (Dark Suited Man #1), Stephen Mendel (Dark Suited Man #2), Tanya Huse (Medical Technician)
• Written By: Vince Gilligan & John Shiban & Frank Spotnitz
• Directed By: Kim Manners

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner)
• Guest Starring: Diana Scarwid (Linda Bowman), Colleen Winton (Therapist), Robert Wisden (Robert Modell)
• Featuring: Scott Oughterson (Old Orderly), Ty Olsson (Young Orderly), Kurt Evans (Sports Store Employee), Donna Yamamoto (Female Agent), Stuart O'Connell (First Cop), Jill Krop (Reporter), Michelle Hart (Trace Agent), Michael Dobson (U.S. Marshall), Richard Leacock (Second Cop)
• Written By: Vince Gilligan & Tim Minear
• Directed By: Daniel Sackheim

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Chad Lindberg (Bobby Rich), Sarah-Jane Redmond (Karin Matthews), Katharine Isabelle (Lisa Baiocchi)
• Featuring: Bob Dawson (Phil Rich), Cynde Harmon (Patti Rich), Laurie Murdoch (Coroner), Myles Ferguson (Joey Agostino), Kate Robbins (Lisa's Aunt), George Josef (Orchard Keeper), Gardiner Millar (Mr. Baiocchi), Christine Anton (Teacher)
• Written By: Jessica Scott & Mike Wollaeger
• Directed By: Ralph Hemecker

• Tagline: ALL LIES LEAD TO THE TRUTH
• Hosted By:
• Written By: Frank Spotnitz & John Shiban
• Directed By: Glen Kasper

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Susannah Hoffman (Melissa Turner), Larry Musser (Jack Bonsaint), William MacDonald (Buddy Riggs), Jenny-Lynn Hutcheson (Polly Turner), Henry Beckman (Fisherman), Carolyn Tweedle (Jane Froelich),
• Featuring: Dean Wray (Rich Turner), Gordan Tipple (Assistant Manager), Harrison R. Coe (Dave the Butcher), Ian Robison (Ranger), Elizabeth McCarthy (Shopper), Tracy Lively (Clerk), Sean Benbow (Customer)
• Written By: Stephen King & Chris Carter
• Directed By: Kim Manners

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Kristin Lehman (Esther Nairn), Kate Luyben (Nurse Nancy), Tom Braidwood (Frohike), Dean Haglund (Langly), Bruce Harwood (Byers)
• Co-Starring: Peter Williams (Jackson)
• Featuring: Rob Daprocida (Bunny), Patrick Keating (Donald Gelman), Jerry Schram (Boyce), Steve Griffith (Paramedic), Ted Cole (2nd Paramedic)
• Written By: William Gibson & Tom Maddox
• Directed By: Rob Bowman

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner)
• Guest Starring: Luke Wilson (Sheriff Hartwell), Patrick Renna (Ronnie Strickland)
• Featuring: Forbes Angus (Funeral Director), Brent Butt (Coroner)
• Written By: Vince Gilligan
• Directed By: Cliff Bole

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Nicholas Lea (Alex Krycek)
• Guest Starring: Veronica Cartwright (Cassandra Spender), Laurie Holden (Marita Covarrubias), Brian Thompson (Bounty Hunter), Jim Jansen (Dr. Heitz Werber), John Neville (Well-Manicured Man), Chris Owens (Jeffrey Spender)
• Co-Starring: Alex Shostak, Jr. (Dmitri), Don S. Williams (Elder)
• Featuring: Ron Halder (Dr. Floyd Fazio), Kurt Max Runte (Ranger), John Moore (2nd Elder), Raoul Ganeen (Guard), Anatol Rezmeritsa (Commandant), Max Wyman (Dr. Lagerqvist), Barbara Dyke (Dr. Alepin)
• Written By: Chris Carter & Frank Spotnitz
• Directed By: Kim Manners

• Tagline: RESIST OR SERVE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner), Nicholas Lea (Alex Krycek)
• Guest Starring: Veronica Cartwright (Cassandra Spender), John Neville (Well-Manicured Man), George Murdoch (3rd Elder), Chris Owens (Jeffrey Spender), Laurie Holden (Marita Covarrubias), Brian Thompson (The Bounty Hunter), Don S. Williams (Elder), Jim Jansen (Dr. Heitz Werber), Alex Shostak, Jr. (Dmitri)
• Also Starring: William B. Davis (Cigarette Smoking Man)
• Co-Starring: Chapelle Jaffe (Dr. Patou)
• Featuring: Michal Suchanek (Young Jeffrey Spender), John Moore (2nd Elder), Klodyne Rodney (Medic), Jenn Forgie (Nurse), Derek Thomas Versteeg (M.P.), Jack Finn (Young Boy)
• Written By: Chris Carter & Frank Spotnitz
• Directed By: Chris Carter

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Fredric Lane (Young Arthur Dales), Garret Dillahunt (Edward Skur), Brian Leckner (Hayes Michel), David Moreland (Roy Cohn), Darren McGavin (Arthur Dales)
• Co-Starring: Eileen Pedde (Mrs. Skur), Dean Aylesworth (Young Bill Mulder)
• Featuring: David Fredericks (The Director), Mitchell Kosterman (Sheriff), Roger Haskett (Coroner), Jane Perry (Dorothy Bahnsen), J. Douglas Stewart (Landlord), Cory Dagg (Bartender), Eric W. Gilder (Old Edward Skur)
• Uncredited: Dean Barrett (Cohn's Assistant)
• Written By: John Shiban & Frank Spotnitz
• Directed By: William A. Graham

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Lili Taylor (Marty Glenn), Richard Fitzpatrick (Gotts), Blu Mankuma (Detective Pennock)
• Featuring: Henri Lubatti (Dr. Wilkenson), Peter Kelamis (ADA Costa), Joe Pascual (Examiner), Colin Lawrence (First Cop), Jason Diablo (Angry Man), Veronika Stocker (Sexy Woman), Dalias Blake (Second Cop)
• Written By: Tim Minear
• Directed By: Kim Manners

• Tagline: THE TRUTH IS OUT THERE
• Guest Starring: Glenn Morshower (Aaron Starkey), Jody Racicot (Father Gregory), Emily Perkins (Dara / Paula), Lauren Diewold (Emily Sim)
• Co-Starring: Eric Keenleyside (Lance Kernof), Patti Allan (Mrs. Kernof)
• Featuring: Arnie Walters (Father McCue), Lorraine Landry (Pathologist Vicki Belon), Tracy Elofson (Four-Faced Man)
• Teleplay By: Frank Spotnitz & John Shiban
• Story By: Billy Brown & Dan Angel
• Directed By: Allen Coulter

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner)
• Guest Starring: Daniel Von Bargen (Jacob Steven Haley), Michael MacRae (August Bremer)
• And: Sam Anderson (Leamus)
• Featuring: J.B. Bivens (Field Agent), Douglas H. Arthurs (Skin-Head Man), John B. Lowe (Dr. Leavitt), Ralph Alderman (Manager), Dean McKenzie (Army Tech), Kate Braidwood (Usherette), Armin Moattar (Goatee Man)
• Written By: John Shiban
• Directed By: Rob Bowman

• Tagline: THE TRUTH IS OUT THERE
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner)
• Guest Starring: Brian Markinson (Gary Lambert), John Apicella (Greg Pincus), Roger R. Cross (Field Agent), Cynthia Preston (Nancy Aaronson)
• Co-Starring: Leslie Jones (Gretchen Starns)
• Featuring: Dmitry Chepovetsky (Supervisor), Brenda McDonald (Mrs. Loach), Robert Luft (Telemarketer), Tim Bissett (Medical Assistant), Norma Jean Wick (Newscaster), Grant Gladish (Cameraman), Steve Bacic (SWAT Commander), Nancy Kerr (Nurse)
• Written By: Vince Gilligan
• Directed By: Kim Manners

• Tagline: THE END
• Also Starring: Mitch Pileggi (Assistant Director Walter Skinner), Nicholas Lea (Alex Krycek), William B. Davis (Cigarette Smoking Man)
• Special Guest Star: Mimi Rogers (Agent Diana Fowley)
• Guest Starring: Jeff Gulka (Gibson Praise), Martin Ferrero (Shooter), Michael Shamus Wiles (Black-Haired Man), Chris Owens (Agent Jeffrey Spender), George Murdock (2nd Elder), Tom Braidwood (Frohike), Dean Haglund (Langly), Bruce Harwood (Byers), Don S. Williams (1st Elder)
• And: John Neville (Well-Manicured Man)
• Featuring: John Moore (3rd Elder), Patrick Phillips (Clinician #1), Paul Moniz de Sa (Clinician #2), John Trottier (Clinician #3), Orest Blajkevitch (Russian)
• Written By: Chris Carter
• Directed By: R.W. Goodwin

• Tagline: FIGHT THE FUTURE
• Cast: David Duchovny (Special Agent Fox Mulder), Gillian Anderson (Special Agent Dana Scully), John Neville (The Well-Manicured Man), William B. Davis (The Cigarette Smoking Man), Martin Landau (Dr. Alvin Kurtzweil), Mitch Pileggi (Assistant Director Walter Skinner), Jeffrey DeMunn (Dr. Ben Bronschweig), Blythe Danner (FBI Assistant Director Jana Cassidy), Terry O'Quinn (FBI Special Agent Darius Michaud), Armin Mueller-Stahl (Conrad Strughold), Lucas Black (Stevie), Chris Fennell (Second Boy), Cody Newton (Third Boy), Blake Stokes (Fourth Boy), Dean Haglund (Richard "Ringo" Langly), Bruce Harwood (John Fitzgerald Byers), Tom Braidwood (Melvin Frohike), Don S. Williams (First Elder), George Murdock (Second Elder), Michael Shamus Wiles (Black Haired Man), Craig Davis (Primitive #1), Carrick O'Quinn (Primitive #2), Tom Woodruff, Jr. (Creature #1), Gregory B. Ballora (Creature #2), Ted King (FBI Agent on Roof), Luis Beckford (FBI Agent), Steve Rankin (Field Agent), Gary Grubbs (Fire Captain Miles Cooles), Steven M. Gagnon (Last Agent Out), Lawrence Joshua (DC Cop), Glendon Rich (DC Cop #2), Gunther Jenson (Security Guard), Scott Smith (Technician), Ian Ruskin (Well-Manicured Man's Valet), Paul Welterlen (Control Room Operator), Joel Traywick (Young Naval Guard), Milton Johns (British Valet), Paul Tuerpé (First Paramedic), Michael A. Krawic (Second Paramedic), Larry Rippenkroeger (Towncar Driver), Josh McLaglen (Buzz Mibee), Randy Hall (Windbreakered Agent), T.C. Badalato (Fireman), Amine Zary (Tunisian), David W. Paris (Pilot)
• Uncredited: Jason Beghe (FBI Man at Bomb Site), Glenne Headly (Barmaid), Vanessa Morley (Young Samantha Mulder in Photograph), Marcus Turner (Young Fox Mulder in Photograph)
• Story By: Chris Carter & Frank Spotnitz
• Screenplay By: Chris Carter
• Directed By: Rob Bowman