8x01 Within
Written by Chris Carter
Directed by Kim Manners
Airdate: 5 November 2000
Scully and Skinner begin the search for Mulder. But a new Agent assigned to find him interferes with their investigation.
Commentary by Kim Manners and Robert Patrick
8x02 Without
Written by Chris Carter
Directed by Kim Manners
Airdate: 12 November 2000
As the search for Mulder intensifies in the Arizona desert, Gibson Praise leads Scully to believe that she is truly closer to her target.
8x04 Patience
Written by Chris Carter
Directed by Chris Carter
Airdate: 19 November 2000
While tackling his first X-File case about a series of gruesome murders surrounding a bat-like creature, Doggett quickly learns that his investigative techniques are somewhat dissimilar to Scully's.
8x05 Roadrunners
Written by Vince Gilligan
Directed by Rod Hardy
Airdate: 26 November 2000
Scully evades Doggett's help in pursuing a religious cult that worships a slug-like creature.
8x06 Invocation
Written by David Amann
Directed by Richard Compton
Airdate: 3 December 2000
Having been kidnapped for ten years, a little boy mysteriously reappears but hasn't aged one bit.
8x03 Redrum
Story by Steven Maeda and Daniel Arkin
Teleplay by Steven Maeda
Directed by Peter Markle
Airdate: 10 December 2000
After his wife is murdered, a lawyer tries to clear his name of the crime but the days regress backward.
8x07 Via Negativa
Written by Frank Spotnitz
Directed by Tony Wharmby
Airdate: 17 December 2000
Working without Scully's input, Doggett and Skinner try to avert the mysterious murder spree of a drug-induced, religious cult leader who leaves no trace of evidence at the crime scenes.
8x09 Surekill
Written by Greg Walker
Directed by Terrance O'Hara
Airdate: 7 January 2001
A marksman with X-ray vision is killing people, and oddly, two exterminators are involved.
8x10 Salvage
Written by Jeffrey Bell
Directed by Rod Hardy
Airdate: 14 January 2001
A man made of metal enacts revenge on those who created him.
8x12 Badlaa
Written by John Shiban
Directed by Tony Wharmby
Airdate: 21 January 2001
A mystic smuggles himself out of India and plagues two families in suburban Washington DC.
8x11 The Gift
Written by Frank Spotnitz
Directed by Kim Manners
Airdate: 4 February 2001
Doggett comes upon an old case that Mulder kept secret from Scully.
8x13 Medusa
Written by Frank Spotnitz
Directed by Richard Compton
Airdate: 11 February 2001
Scully and Doggett race to fight off a contagion lurking under the subway tunnels of Boston.
8x08 Per Manum
Written by Chris Carter and Frank Spotnitz
Directed by Kim Manners
Airdate: 18 February 2001
When Scully digs deeper into reports of alien fertilization on humans, she questions her own pregnancy and its conception.
8x14 This Is Not Happening
Written by Chris Carter and Frank Spotnitz
Directed by Kim Manners
Airdate: 25 February 2001
Doggett calls on another agent to assist the Mulder case. But Scully's fears about finding him come to a head with the sudden recovery of abductees seized at the same time.
8x15 DeadAlive
Written by Chris Carter and Frank Spotnitz
Directed by Tony Wharmby
Airdate: 1 April 2001
When a former abductee awakens from the dead, Scully pins her hopes on resurrecting the recently buried Mulder.
8x18 Three Words
Written by Chris Carter and Frank Spotnitz
Directed by Tony Wharmby
Airdate: 8 April 2001
Wrangling his way back onto an X-File, Mulder gets in over his head trying to expose further evidence of colonization.
8x17 Empedocles
Written by Greg Walker
Directed by Barry K Thomas
Airdate: 22 April 2001
Agent Reyes enlists Mulder's help investigating a killer's connection to the unsolved murder of Doggett's son.
8x16 Vienen
Written by Steven Maeda
Directed by Rod Hardy
Airdate: 29 April 2001
Mulder and Doggett are begrudgingly thrown together to investigate several deaths aboard an oil rig. But Mulder is convinced that the ship is really carrying the alien black oil.
8x19 Alone
Written by Frank Spotnitz
Directed by Frank Spotnitz
Airdate: 6 May 2001
Teamed with a new partner while Scully's on maternity leave, Doggett investigates the mysterious disappearance of two men. After he disappears as well, Mulder defies orders and searches for him.
8x20 Essence
Written by Chris Carter
Directed by Kim Manners
Airdate: 13 May 2001
A secretive investigation by Mulder and Doggett leads to new evidence about the nature of Scully's pregnancy and the plot against her unborn child.
8x21 Existence
Written by Chris Carter
Directed by Kim Manners
Airdate: 20 May 2001
With otherworldly factions in pursuit, Mulder and the agents race to safeguard the birth of Scully's child.