5x02 Redux
Written by Chris Carter
Directed by R W Goodwin
Airdate: 2 November 1997
Mulder accesses a secret research facility that may hold a cure for Scully's illness. Meanwhile, Scully performs an experiment in hopes of determining the origin of the disease.
5x03 Redux II
Written by Chris Carter
Directed by Kim Manners
Airdate: 9 November 1997
As Mulder continues his search for a cure for Scully's illness - and the identity of a mole operating from within the Bureau - he receives help from a most unlikely source.
5x01 Unusual Suspects
Written by Vince Gilligan
Directed by Kim Manners
Airdate: 16 November 1997
In 1989, The Lone Gunmen meet for the very first time when they assist a woman who claims the government plans to use civilians as guinea pigs in a secret experiment.
5x04 Detour
Written by Frank Spotnitz
Directed by Brett Dowler
Airdate: 23 November 1997
The agents investigate when several people disappear in a remote region of Florida.
5x06 The Post-Modern Prometheus
Written by Chris Carter
Directed by Chris Carter
Airdate: 30 November 1997
Townspeople in rural Indiana believe a frankenstein-like creature roams the countryside.
5x05 Christmas Carol
Written by Vince Gilligan, John Shiban and Frank Spotnitz
Directed by Peter Markle
Airdate: 7 December 1997
A mysterious phone call and an apparent suicide lead Scully to a young girl who she suspects is her sister Melissa's daughter.
5x07 Emily
Written by Vince Gilligan, John Shiban and Frank Spotnitz
Directed by Kim Manners
Airdate: 14 December 1997
Scully and Mulder search for a cure to Emily's disease.
5x08 Kitsunegari
Written by Vince Gilligan and Tim Minear
Directed by Daniel Sackheim
Airdate: 4 January 1998
Mulder and Scully hunt for Robert Modell, a.k.a. Pusher, after he escapes from prison.
5x09 Schizogeny
Written by Jessica Scott and Mike Wollaeger
Directed by Ralph Hemecker
Airdate: 11 January 1998
A teenage boy undergoing psychological counseling becomes the prime suspect in his stepfather's murder.
5x10 Chinga
Written by Stephen King and Chris Carter
Directed by Kim Manners
Airdate: 8 February 1998
Residents of a seacoast town in Maine are terrorized by a little girl and her doll.
5x11 Kill Switch
Written by William Gibson and Tom Maddox
Directed by Rob Bowman
Airdate: 15 February 1998
A sentient computer program targets its creators for extinction.
5x12 Bad Blood
Written by Vince Gilligan
Directed by Cliff Bole
Airdate: 22 February 1998
The agents recount their versions of events that led to the killing of a teenager suspected of being a vampire.
5x13 Patient X
Written by Frank Spotnitz and Chris Carter
Directed by Kim Manners
Airdate: 1 March 1998
The agents search for answers when UFO abductees gather en masse - and are burned alive.
5x14 The Red and The Black
Written by Frank Spotnitz and Chris Carter
Directed by Chris Carter
Airdate: 8 March 1998
Scully undergoes hypnosis in an effort to remember what happened at the mass burning site.
5x15 Travelers
Written by John Shiban and Frank Spotnitz
Directed by William A Graham
Airdate: 29 March 1998
In the 1950s, two FBI agents investigate strange deaths somehow linked to Mulder's father.
5x16 Mind's Eye
Written by Tim Minear
Directed by Kim Manners
Airdate: 19 April 1998
Mulder suspects a blind woman possesses the ability to see through the eyes of a killer.
5x17 All Souls
Story by Billy Brown and Dan Angel
Written by Frank Spotnitz and John Shiban
Directed by Allen Coulter
Airdate: 26 April 1998
A priest asks for Scully's help when a handicapped girl dies a mysterious death.
5x18 The Pine Bluff Variant
Written by John Shiban
Directed by Rob Bowman
Airdate: 3 May 1998
Mulder goes undercover to infiltrate a militia group armed with a deadly pathogen.
5x19 Folie a Deux
Written by Vince Gilligan
Directed by Kim Manners
Airdate: 10 May 1998
Mulder is taken hostage by a man who claims his boss is literally a monster.
5x20 The End
Written by Chris Carter
Directed by R W Goodwin
Airdate: 17 May 1998
A boy possessing psychic powers may hold the key to unlocking the mysteries of the X-Files.