Season One

Season Two

Season Three

Season Four

Season Five

Season Six

Season Seven

Season Eight

Season Nine

Season Ten



Seasons 1-5

Fringe is a sci-fi series that deals with parallel dimensions. In Season 2, episode 1's "A New Day in the Old Town," Senator James Van Horn's remarks suggest that this series takes place in the same universe as The X-Files. Not only is the X-Files referred to, but FBI agent Mulder is specifically referenced as having gone off the rails. The appearance of the X-Files episode "Dreamland" on television would seem to argue that The X-Files is a TV show in that universe, however, "Hollywood AD" showed that the adventures of Mulder and Scully had been turned into a movie. It's not known if that movie was later aired on TV (and that's what's being seen on television) or was spun off into a television series. It's also possible that in one universe, the X-Files is a television series, while in another it's history.

X-Files writer and producer Darin Morgan worked as a Consulting Producer on Fringe's third season. While this show's mythological focus on alternate dimensions might seem contrary to that of the X-Files, in fact, the X-Files ninth season episode "4-D" deals with that very subject.


Twin Peaks

The Return





Although there is no direct connection between the two shows, the series Fringe connects The X-Files to Twin Peaks, putting all three in the same universe. Fringe not only mentions a promising FBI agent named Mulder, who went off the rails, but features Doctor Jacoby's two-color glasses and says "they were sent to be by a Doctor Jacoby from Washington State."


David Duchovny, who plays FBI agent Fox Mulder  on the X-Files, played FBI agent Denise Bryson on Twin Peaks. She is transgender and once went by the name Dennis Bryson. She worked with Dale Cooper in 1987, went undercover for the DEA in 1988, and met with Cooper again in 1989. In 2014, she became the FBI Chief of Staff.



Season 10: Episode 1

10x01 My Struggle

After their breakup and a long absence from the X-Files, Mulder (now a recluse) and Scully (now a medical doctor) are summoned by a popular television conspiracy theorist who has evidence of the government threat against mankind using stolen alien technology.

The Cigarette Smoking Man reappears

February 2016


Season 10: Episode 4

10x02 Home Again


Date seen on flyer.

Feb 8-11, 2016


Season 10: Episode 2

10x05 Founder's Mutation



Mid-February 2016



Comic: Millennium: Issues 1-5

Trade pb: Millennium


In the year 2000, the end of the world - the anticipated "Millennium Event" - was avoided thanks to the efforts of Frank Black and FBI agents Fox Mulder and Dana Scully. Or was it? Frank's psychic gifts have been showing him that evil has continued to grow unabated in the world, and he's trying his best to ignore it. But soon the resurgence of the Millennium Group and their quest to find Frank's daughter, Jordan, will pull him into the fray once again.

Although the internal date is provided ("5,527 days since the new millennium"), this places this in 2015, which cannot be the case as Mulder is not back at the FBI. It likely reveals the "actual" date (see "Dating the X-Files and Millennium" for more info on this.)



Season 10: Episode 3

10x03 Mulder and Scully Meet the Were-Monster



Late-February 2016



Season 10: Episode 5

10x04 Babylon


Scully notes that she's been waiting 23 years to say, "Nobody but the FBI's most unwanted," which is the very first line Mulder uttered when he met Scully in the pilot episode.

March 2016


Comic: The X-Files Annual 2016     April  
Comic: The X-Files 1-5 (2016 series)   Date provided on time-cards of suspects in a mall shooting May  

 Short Story: "Dusk"

From the book: The X-Files: Trust No One (IDW)

Incorrectly dated in 2015



Season 10: Episode 6

10x06 My Struggle II


Six weeks after Season 10: Episode 1: "My Struggle"



Comic: The X-Files Season 10: Issues 19-20: G-23

Hardcover: The X-Files Season 10, Vol. 4


A government plot leads Mulder to ponder his early days as a cadet at Quantico, including his relationship with Diana Fowley and the fateful day that he found the iconic "I Want to Believe" poster. But the intrigue goes even further back in time, to when Bill Mulder was partnered with the Cigarette Smoking Man to experiment on the counterculture with the G-23 drug.

Flashback: 1966

2 days in July


Comic: The X-Files: Year Zero

Trade pb: The X-Files: Year Zero


When a blue-collar worker from New Jersey passes prophetic messages to the FBI from a mysterious "Mr. Zero," Mulder is convinced it is the same otherworldly entity that contacted the FBI through a suburban housewife in the 1940s. This similarly named "Mr. Zero" pointed the FBI toward many unusual cases, leading to the establishment of "the X-Files"!

 Flashback takes place in November 1946−January 1947. No discernable date is given for the frame story, which is being repurposed to a later date in order for it to fit with the Event Series.

Mr. Xero (or Zero) is established to be an alien entity from Zeta Reticuli that served to help the FBI solve cases involving supernatural elements, and whose name is the reason the X-Files are thus called.



Comic: The X-Files Annual 2014: Talk to the Hand

Scully is visited in a dream by the specter of an old high school sweetheart who gives her the clue to solving a case.

Dating is based on Scully's clock revealing it is Thursday the 1st, which only occurs in 2013 in October. It is being repurposed to a later date in order for it to fit with the Event Series.

October 1


Comic: The X-Files Annual 2014: Priest

When a murdered man's spirit continues to warn his wife of the men coming to claim their money and kill her, Mulder and Scully investigate, only to discover an additional apparition: The Guardian of the Afterlife.

Written by Frank Spotnitz.

Dating is my own, based on the apparent weather in Long Island at the time of the story.


Mulder's belief in ghosts and the afterlife stem from the revelation of his sister's spirit in the Season 7, episode 11 story "Closure."



Comic: The X-Files Season 10: Issues 16-17: Immaculate

Hardcover: The X-Files Season 10, Vol. 4


An abortion clinic bombing leads Scully and Mulder to investigate a right-wing extremist group helmed by a teenage girl who claims to hear the voice of God in her head. But her actions are far from heavenly...

Frank Black, from Millennium, returns to the X-Files, his first reappearance since Season Seven, episode 5's "Millennium."

Weather appears cold, which in North Carolina, would at the earliest would be in October

3 days in October


Comic: X-Files: X-Mas Special: Season 10 Greetings (IDW)

FBI Deputy Director Walter Skinner hosts a holiday get-together for his most special agents, but a ghost of Christmas past returns to haunt Fox Mulder.

Flashbacks take place in December 1972 and 1973.


December 24



Episode Theme Codes


A: Artificial Intelligence, technology and machines gone bad

B: Bugs, creepy-crawlers and parasitic pests

C: Cults, tribal practices and bizarre religious rites

D: Drama

E: Evil experiments and other scientific blunders

F: Fantasy, Philosophic theory, and Time paradoxes

G: Government conspiracies (unrelated to the mythology)

H: Humor

K: Killers (serial & spree), psychopaths; the human monster

L: Local legends: Bigfoot, lake monsters, etc.

M: Monsters, mutants and malformed menaces

N: Nightmares, Dreams and Visions

O: Occultism, devil worship, demons and dark forces.

P: Psychic manifestations (telepathy, telekinesis, etc.,)

R: Reincarnation, transmigration and other pagan beliefs

S: Spirits, ghosts and apparitions

U: UFO's and aliens (unrelated to the mythology)

V: Viruses, bacteria and other nasty microbial matter

W: Werewolves, vampires and zombies

X: The Alien/Conspiracy main plot thread of the mythology

?: Unknown



As time paradoxes are part of the X-Files milieu, so too might be alternate and parallel dimensions. Due to irreconcilable contradictions (noted in the continuity notes) with the Event Series (Season X of the television series), the main mythology stories from the Season 10 and 11 comics, as well as Lone Gunmen miniseries are placed here, where they take place in another similar, but different universe.


Episode/Production # /Title


Adaptation &/or Plot Synopsis

Continuity Notes

(contains spoilers)



Comic: The X-Files Season 10: Issues 1-5: The Believers

Hardcover: The X-Files Season 10, Vol. 1


Fox Mulder and Dana Scully—now living together in Spotsylvania County, Virginia under the aliases Anthony and Dana Blake—are visited by Deputy Director Walter Skinner, who informs them that an unknown person hacked into the FBI's files and discovered information regarding the X-Files. Skinner is later nearly killed in his hotel room, whereas Scully is met outside of the hospital by one of her patients, the young Emily Van de Kamp who is acting as if she were possessed; Scully is soon surrounded and brutally attacked.


FBI Agent John Doggett investigates a pipeline that mysteriously explodes. Meanwhile, Mulder tracks down the Lone Gunmen—revealed to have faked their deaths several years earlier—who attempt to help him find Scully. Scully, meanwhile, wakes up in a cabin surrounded by the mysterious Acolytes. She is subsequently saved by the ominous Deacon.


FBI Agent Monica Reyes investigates William's adoptive parents, only to discover their dead bodies in William's room, revealing that it was some unknown entities portraying the adoptive parents. Scully learns that she is being protected by the Deacon, and that the pipeline that Dogget was investigating is carrying magnetite. Mulder is visited by the believed-to-be dead Smoking Man, who behaves extremely oddly. Skinner tracks down Emily, only to discover tell-tale signs of acidic green alien blood.


Mulder visits the pipeline believed to be carrying magnetite and deduces that Scully has been taken into the surrounding woods. Meanwhile, Scully is taken by the Deacon to a general store, where she is picked up by an officer, who turns out to be a shape-shifting Acolyte; he transforms into Mulder, and Scully crashes the car. In the woods, Scully shoots the real Mulder, believing him to be Deacon. Mulder is healed by the Acolytes only to be tricked into thinking one of them is Scully. The real Scully, however manages to kill the impostor; suddenly she witnesses a massive alien space ship rise from the center of Yellowstone National Park, but begins to forget the encounter.


She reports to an FBI review board, headed by Skinner, and argues that people with connections to the X-Files division are systematically being targeted. To counter this, the FBI decides to reinstate Mulder and Scully as federal agents.

Dated 11 years after the birth of Scully's son William, which occurred some time in 2001, which places this series in 2012.  The story references protests against the "newly constructed Blackstone XL pipeline" in Crook County, Wyoming. While the name "Blackstone XL" can be considered as scornful epithet for the project by the Lone Gunmen, in fact, the ONEOK pipeline was granted eminent domain and began construction in November 2012 under much protest and controversy in Crook County, giving us a date for these stories. 

Mulder and Scully are reinstated to the FBI. Skinner is now Deputy Director. Both the Lone Gunmen and the Cigarette Smoking Man are revealed to be alive, though the latter seems to be no longer human. Agents John Doggett and Monica Reyes are abducted by the mysterious Acolytes.

William disappears.

12 days in late November, early December 2012


Comic: The X-Files Season 10: Issues 6-7: The Hosts

Hardcover: The X-Files Season 10, Vol. 2


Agents Mulder and Scully are summoned to a meeting and introduced to their new supervisor, Assistant Director Anna Morales, intent on streamlining the newly reopened X-Files unit. She sends Scully to Quantico, VA and Mulder to Martha's Vineyard to solve a case that has haunting similarities to their decades-old investigation into the Flukeman. Together they make dangerous revelations about the humanoid flatworm's ability to regenerate and procreate. Mulder survives a massive Flukeman attack in the sewers beneath Martha's Vineyard thanks to Scully's surgical skills, but he has developed an unnerving psychic connection to the creatures, providing him with a greater understanding of the nature of the organisms and their connection to the 1986 Chernobyl disaster.

Sequel to Season 2, episode 2: "The Host."

Mulder and Skully are back in the FBI for the first time, working under Assistant Director Anna Morales. The case takes place during the beginning of the summer vacation.  The pair have apparently been given six months to get their affairs in order. The Flukeman case is revisited and discovered to have originated from the Chernobyl disaster.

4 days in late June 2013


Comic: The X-Files Season 10: Issue 8: Being for the Benefit of Mr. X

Hardcover: The X-Files Season 10, Vol. 2


Mulder and Scully ditch their reinstatement training after receiving a voicemail originating from Mulder's old apartment. The clues lead them to revelations about their enemies and the project code named Purity Control. Meanwhile, flashbacks shed new light on the motives behind Mulder's past informants and the source trying to contact him now

Flashback with X and Deep Throat occurs in 1987.

X briefly reappears, but dissolves into green liquid

1 day in late June 2013


Comic: The X-Files Season 10: Issue 9: Chitter

Hardcover: The X-Files Season 10, Vol. 2


The agents pursue a missing person's case in Millersburg, Pennsylvania in which the prime suspect might be under the control of the Chittering God, a being that feeds on its victims' despair. But what Scully discovers about this entity might be less frightening than what she discovers about herself.

Flashback takes place in April 27, 1986

2 days in early July 2013


Comic: The X-Files Season 10: Issue 10: More Musings of a Cigarette Smoking Man

Hardcover: The X-Files Season 10, Vol. 2


The man who spent his life hiding the truth from the public will now have to uncover it if he is to make sense of how he mysteriously returned from the dead.

Flashbacks takes place in 1962, 1970, 1952, 1965, 1972


1 day in July 2013


Comic: The X-Files Season 10: Issues 11-15: Pilgrims

Hardcover: The X-Files Season 10, Vol. 3


When an ancient weapon is discovered beneath a newly tapped oil field in Saudi Arabia, Agents Mulder and Scully find themselves pulled back into a black game as slippery as the X-Files. The dreaded "black oil" has been tapped in the remote deserts of the Middle East, and divergent forces are massing to contain, control, and even assist the deadly, sentient essence of Earth's once alien colonists. But what does it want with Agents Mulder and Scully, what does a rising neo-Syndicate want with it? And why, where, and—most importantly—how is Alex Krycek involved?!


Agent Mulder has been infected with black oil, playing host to an alien being seeking to use his knowledge, history, and expertise to unlock something mysteriously and terribly powerful. But Mulder and the would-be alien colonist possessing him aren't the only ones looking for it...

Alex Krychek is brought back to life. The Mulder-controlled black oil alien called Sheltem reveals to Scully that they are an alien race that came to Earth during the time of the dinosaurs, but were proceeded by another race that hunted them down.

The Cigarette Smoking Man is revealed, along with Krychek, X, and the Well-Manicured Man, to have been brought back to life by the "Glasses-Wearing Man" who displays telekinetic powers and controls the new syndicate.  At his behest, the Cigarette Smoking Man is killed by a duplicate of himself.

7 days in mid July 2013


Comic: The X-Files: Conspiracy #1

Hardcover: The X-Files Conspiracy


The Lone Gunmen receive an email with disturbing reports, apparently from the future, that detail a lethal virus outbreak. With Agents Mulder and Scully working one lead, the Gunmen must spring into action and investigate several urban legends: a group of ghost-hunters, mutant turtles that live in the sewers, shape-changing alien robots, and a vengeful spirit from beyond the grave!

The events of this miniseries take place in an alternate universes in which the events of this story never happened.  As a result, it is intentionally non-canon, allowing the writers to delve into various crossover universes, including ones, such as The Transformers, which would be otherwise implausible in the context of The X-Files universe. 


May 13, 2014


Comic: The X-Files: Conspiracy: Ghostbusters #1

Hardcover: The X-Files Conspiracy



While The Ghostbusters universes can easily be made to fit into continuity, the fact that this storyline never occurred likely indicates it's not intended to be part of the X-Files universe, though an argument can be made that it might still be, though whether as a direct reflection of what was depicted in the two films and 147 episodes of the animated series (The Real Ghostbusters) or as dramatized versions or even entirely fictionalized versions of the "real" events is up to the reader/viewer to decide.


May 2014



Comic: The X-Files: Conspiracy: Teenage Mutant Ninja Turtles #1

Hardcover: The X-Files Conspiracy


Ronnie Strickland, from Season 5, episode 12: "Bad Blood" returns.

While The Teenage Mutant Ninja Turtles universes can be made to fit into continuity, the fact that this storyline never occurred likely indicates it's not intended to be part of the X-Files universe. One could argue that the grittier version depicted in the original 1984-1995 comic-book series (Volumes 1-2) is more likely a candidate for existing in the X-Files universe than the five lighter, family-friendly animated series or five live-action films that came later. The film Turtles Forever, in fact, depicts its later incarnations as separate entities existing in parallel dimensions.


May 2014



Comic: The X-Files: Conspiracy: Transformers #1

Hardcover: The X-Files Conspiracy


Story takes place in The Transformers: Evolution (Hearts of Steel) alternate universe continuity, and cannot be made to fit into the X-Files universe. 


May 2014



Comic: The X-Files: Conspiracy: The Crow #1

Hardcover: The X-Files Conspiracy


While The Crow universes can be made to fit into continuity, the fact that this storyline never occurred likely indicates it's not intended to be part of the X-Files universe, though an argument can be made that it is.


May 2014



Comic: The X-Files: Conspiracy #2

Hardcover: The X-Files Conspiracy


The events of this miniseries take place in an alternate universes in which the events of this story never happened.  As a result, it is intentionally non-canon.


May 2014



Comic: The X-Files Season 10: Issue 18: Monica and John

Hardcover: The X-Files Season 10, Vol. 4


Special Agents John Doggett and Monica Reyes confront the Acolyte who abducted them a year and a half earlier.

Agents Monica Reyes and John Doggett are revealed to be alive following their abduction in issues 1-5: The Believers, dated 18 months, two weeks and three days after the events of that story.

1 day in early July 2014


Comic: The X-Files Season 10: Issues 21-25: Elders

Hardcover: The X-Files Season 10, Vol. 5


The 'Syndicate' that long bedeviled Agents Mulder and Scully has returned with old faces and a new leader. Their first order of business: shutting down the X-Files for good! 

Date is my own.

Flashback to 2001.

Gibson Praise returns, revealed to be in charge of the New Syndicate, made up of formerly dead members who have been cloned by him in a lab at Guantanamo Bay. He discredits and abducts Mulder to Cuba, where Scully heads there on the warning of one clone of the Cigarette Smoking Man. While the Lone Gunmen are driven from their office, Scully discovers that Gibson's plans are more frightening and far reaching than she or Mulder could ever imagine.

4 days in January 2015


Comic: The X-Files Season 11: Issue 1: Cantus

Hardcover: The X-Files Season 11, Vol. 1

Dated two months after the end of Season 10

March 2015


Comic: The X-Files Season 11: Issues 2-3: Home Again

Hardcover: The X-Files Season 11, Vol. 2


Sequel to Episode 4x03: Home.  Not to be confused with second episode of the same title from the Six Episode Event.



Comic: The X-Files Season 11: Issue 4: My Name is Gibson





Comic: The X-Files Season 11: Issues 5-6: Endgames









Disclaimer: Many of the above plot synopses are taken from the log lines of The Official Guide to the X-Files: all things.  No copyright infringement is intended or implied.  This is a non-profit site used strictly for entertainment and educational purposes.  All text and images are © 2005 Twentieth Century Fox Film Corporation and ©2005 HarperCollins Publishers.