Every Season of The X-Files Ranked

Kevin

The X-Files is one of my favourite shows of all time. It helped define ’90s television, made Mulder and Scully one of the greatest TV duos, and turned monsters and government conspiracies into appointment viewing. But like any series that ran for more than 200 episodes, not every season was created equal. Some years are stone-cold classics, and others prove that even the truth can get a little lost along the way. So, let’s shine our high-powered flashlights through the air and see how all 11 seasons of The X-Files land when ranked from worst to best. I’ll also include some of my own favourite (and least favourite) episodes from each season.

11. Season 10

As great as it was to see Mulder and Scully back in action, the first season of the revival is undeniably creaky. It has its moments, but six episodes simply weren’t enough for the show to find any real rhythm.

Once again, the mythology is rebooted, this time with a fresh conspiracy that forces the agents to reassess everything they once believed. It’s more than a little frustrating to head down that road again, and Chris Carter’s My Struggle episodes live up to their title in the worst possible way. They are, frankly, a f***ing struggle.

If I’m being perfectly honest, Darin Morgan’s Mulder and Scully Meet the Were-Monster might be the only legitimately decent episode of the season. The rest mostly coast by on the charisma of David Duchovny and Gillian Anderson, but even they can’t save the revival from its worst impulses. Sadly, season 10 wasn’t the full-fledged return we wanted, with only one standout episode to remind you how good The X-Files could still be.

Favourites: Mulder and Scully Meet the Were-Monster, Founder’s Mutation, Home Again

Least Favourites: Babylon, My Struggle, My Struggle II

10. Season 9

While it might be controversial to place a season from the original run this low, I’ve got to do it. Season 9 commits one of the worst sins any show can commit: it’s boring.

Duchovny is officially gone — although he does return for the finale — leaving the day-to-day investigations to Agents Doggett (Robert Patrick) and Reyes (Annabeth Gish), while Scully increasingly feels like a contractually obligated guest star in her own series. Doggett remains a solid addition, and Patrick does what he can, but the show around him is running on fumes.

The new mythology, with its super soldiers, UFO cults, and increasingly convoluted conspiracy threads, feels like it’s spinning its wheels without offering anything especially fresh or compelling. There are occasional moments of promise, but for the most part, this is The X-Files at its most exhausted.

Favourites: John Doe, William, 4-D

Least Favourites: Lord of the Flies, Improbable, Jump the Shark

9. Season 11

Chris Carter often seemed like his own worst enemy during the revival, and Season 11 gets off to a frustrating start by essentially wiping away the events of the Season 10 finale, reframing them as a possible premonition experienced by Scully.

It also almost completely ignores Agents Einstein and Miller, played by Lauren Ambrose and Robbie Amell, despite the previous season setting them up as potential next-generation replacements.

Once that baggage is out of the way, Season 11 does manage to recapture a little of the old energy. The expanded 10-episode count gives the show more breathing room, and Duchovny and Anderson seem to be having more fun as they settle back into Mulder and Scully’s rhythm. There are flashes here of the show fans fell in love with, even if they’re surrounded by some questionable choices.

Unfortunately, the final episode — which now stands as the series finale — is just awful. Characters make baffling decisions, the mythology collapses in on itself, and Scully’s miraculous pregnancy once again becomes a plot point. It’s a deeply unsatisfying ending for two of television’s most iconic characters. Here’s hoping Ryan Coogler’s upcoming reboot, assuming it connects to the original series in any meaningful way, can help steer The X-Files back toward the truth.

Favourites: The Lost Art of Forehead Sweat, Rm9sbG93ZXJz, Familiar

Least Favourites: My Struggle III, My Struggle IV, Nothing Lasts Forever

8. Season 7

Season 7 is the first year where The X-Files starts to feel noticeably tired, and you get the real sense that everyone involved thought this might be the final stretch.

In fairness, there is still a terrific batch of episodes here. The long-running mystery of what happened to Mulder’s sister Samantha is finally resolved, even if the answer wasn’t satisfying for everyone. Classic villain Donnie Pfaster returns, the show experiments with format in X-Cops, and Chris Carter even manages to give his other series, Millennium, a finale while he’s at it.

But for every highlight, there’s also a reminder that the show is running out of gas. Some episodes feel oddly disposable, and then there’s Fight Club, which might be my least favourite episode of the entire series. One Kathy Griffen is more than enough, but this episode gives us two. Still, Season 7 has enough strong moments to make it worthwhile, but for the first time, The X-Files feels like a show trying to figure out how much longer it can keep going.

Favourites: Theef, Je Souhaite, Requiem

Least Favourites: Fight Club, First Person Shooter, Brand X

7. Season 8

When David Duchovny stepped away from the show, fans weren’t exactly optimistic that The X-Files could survive without Mulder at the center. But Season 8 is much better than expected, largely thanks to Robert Patrick’s arrival as Agent John Doggett.

Doggett gives the show a fresh shot of energy, bringing a different kind of skepticism and intensity to the series. More importantly, he creates an entirely new dynamic with Scully, who now finds herself in an unfamiliar position as the believer. It’s a smart reversal, and Gillian Anderson carries that shift beautifully.

Although Duchovny is no longer a full-time cast member, Mulder does appear in a handful of episodes, and the arc of his abduction and return is surprisingly powerful. His antagonistic relationship with Doggett is especially compelling. By the time Mulder returns, Doggett has formed a strong working partnership with Scully, and from Mulder’s point of view, this is the man who has stepped into his office, taken over his life’s work, and earned Scully’s trust. Of course he’s going to be resentful.

I will also add that the two-part finale, Essence and Existence, is strong, emotional, and genuinely satisfying. Honestly, it probably should have been the end of the original run.

Favourites: Roadrunners, Essence/Existence, Patience

Least Favourites: Badlaa, Medusa, Salvage

6. Season 6

Season 6 found The X-Files moving production from Vancouver, with its rain-soaked forests and oppressive atmosphere, to Los Angeles, where the series experimented with something truly radical: sunlight.

I will always prefer the Vancouver years, but it’s easy to see that the creative team was having fun with its new toy chest. The move may have changed the texture of the show — it’s lighter, glossier, and a little less spooky — but it’s still wildly entertaining. If anything, the change of scenery seemed to loosen everyone up, leading to one of the more playful seasons of the entire run.

It also brought the Syndicate story arc to a conclusion with the two-parter Two Fathers/One Son. After six years, the mythology had grown so mysterious and convoluted that it desperately needed to be wrapped up. Alien/human hybrids, shape-shifting bounty hunters, black oil, bees, faceless rebels — it had all become a bit much. Season 6 may not have the same gloomy magic as the early years, but it proves The X-Files could still reinvent itself without completely losing its identity.

Favourites: Drive, Arcadia, Tithonus

Least Favourites: Agua Mala, The Rain King, Alpha

5. Season 5

Season 5 represents The X-Files at the height of its popularity, but it also marks the beginning of the end. The mythology was starting to strain under the weight of its own complexity, and this would be the final season of the original run filmed in Vancouver.

That said, the standalone episodes remain excellent, and the season has a real sense of momentum as it builds toward the first feature film, The X-Files: Fight the Future, which was released between Seasons 5 and 6.

Due to reshoots for the movie, several episodes of this season feature minimal appearances by Mulder and Scully. Unusual Suspects tells the origin story of the Lone Gunmen, while Travelers digs into the creation of the X-Files themselves. Mulder appears only briefly in both, and Scully is absent entirely. Chinga and Christmas Carol flip that dynamic, giving Scully the spotlight while Mulder is used more sparingly.

Even with those production realities, Season 5 remains a very strong year. It may not be quite as consistent as the seasons immediately before it, but it still delivers some terrific monsters, memorable mythology, and the feeling of a series operating at full cultural power.

Favourites: Bad Blood, Detour, The Pine Bluff Variant

Least Favourites: Kill Switch, Schizogeny, Chinga

4. Season 1

“Sorry, nobody down here but the FBI’s most unwanted.”

This is where it all began: Mulder and Scully investigating the paranormal, chasing shadowy conspiracies, and stumbling into creepy monsters in dark corners of America. The first season may be rougher around the edges than what followed, but the atmosphere is unbeatable. There’s a raw, eerie quality to these early episodes that later seasons never quite recaptured. In my opinion, the show came out of the gate swinging, and some of my all-time favourite episodes are included in this season.

Sure, there are a few stumbles as the creative team figures out what works and what doesn’t. Episodes like Space, Shapes, and The Jersey Devil aren’t exactly remembered as all-timers. But the season hits far more often than it misses, and it’s easy to see why audiences quickly got hooked. The ratings steadily climbed as the season went on, and by the time it all came to a close with The Erlenmeyer Flask, The X-Files was officially a phenomenon.

Favourites: Squeeze, Beyond the Sea, Ice

Least Favourites: Space, Ghost in the Machine, Shadows

3. Season 4

Season 4 is one of the darkest and most emotionally punishing years of The X-Files. It also contains one of the scariest episodes of the entire series, as well as one of my all-time personal favourites. Of course, I’m talking about Home, the infamous episode involving the Peacock family and the horrifying secret they keep hidden under the bed. It remains one of the show’s most disturbing hours, and you’ll never listen to Johnny Mathis the same way again.

Duchovny and Anderson also do some of their very best work this season. In Paper Hearts, Mulder finds himself questioning whether his sister Samantha was really abducted by aliens, or if she may have been kidnapped and murdered by John Lee Roche (Tom Noonan), a notorious child killer Mulder helped apprehend years earlier. It’s heartbreaking stuff, and Duchovny plays the hell out of it.

As for Anderson, Season 4 gives Scully one of her most powerful arcs, as she is diagnosed with cancer and forced to confront her own mortality. Memento Mori deals with Scully accepting her diagnosis and vowing to fight it, while Mulder desperately tries to connect her illness to her abduction. Once again, the acting from both leads is tremendous, and it’s easy to see why this is the episode that won Anderson the Emmy Award for Outstanding Lead Actress in a Drama Series.

This is The X-Files at the top of its game, the mythology feels personal, the monsters are disturbing, and the emotional stakes are as high as they get.

Favourites: Paper Hearts, Home, Unruhe

Least Favourites: El Mundo Gira, Teliko, Synchrony

2. Season 2

For me, this is when The X-Files really became The X-Files. The first season may have established the premise, the atmosphere, and the Mulder/Scully dynamic, but Season 2 is where the show truly began to take shape. Some of the series’ most memorable villains are introduced, and the mythology becomes much more compelling.

A lot of that, strangely enough, came about because of Gillian Anderson’s real-life pregnancy. Toward the end of the first season, Anderson informed the production team that she was pregnant, and by the time Season 2 started filming, the show had to work hard to conceal it with desks, oversized coats, and some very strategic framing. Eventually, to give Anderson time off, the writers decided to have Scully abducted—a creative workaround that would become one of the most important events in the entire series.

That abduction doesn’t just deepen the mythology; it changes the emotional foundation of the show. Mulder’s search for the truth suddenly becomes even more personal, while Scully’s trauma and unexplained experiences continue to echo throughout the rest of the series. What could have been a behind-the-scenes complication became one of The X-Files’ defining storylines.

Season 2 also brings in several essential new characters, including Nicholas Lea as Alex Krycek, Steven Williams as X, and Brian Thompson as the Alien Bounty Hunter. Between the expanding conspiracy and stronger monster-of-the-week episodes, Season 2 is where the show really locks into what it was meant to be.

Favourites: Humbug, Colony/End Game, Die Hand Die Verletzt

Least Favourites: 3, Fearful Symmetry, Død Kalm

1. Season 3

After truly becoming The X-Files we know and love in the second season, Season 3 is where the show fully mastered itself. It’s really firing on all cylinders this season, with a near-perfect balance of mythology and monster-of-the-week episodes.

The mythology remains mysterious without feeling overly tangled, with episodes like The Blessing Way, Paper Clip, Nisei, 731, and Talitha Cumi deepening the conspiracy while keeping the emotional stakes firmly tied to Mulder and Scully. The alien colonization storyline is expanding, but it hasn’t yet collapsed under the endless questions upon endless questions, which makes this one of the most satisfying stretches of the larger arc.

The standalone episodes are just as strong, and arguably even better. After all, this is the season that gives us Clyde Bruckman’s Final Repose, one of the finest hours of television the show ever produced, as well as Pusher and Jose Chung’s From Outer Space. The writers had become quite confident in bending the show’s formula without breaking it.

Season 3 also benefits from Mulder and Scully at their best. Duchovny and Anderson are completely locked in by this point, whether they’re trading dry one-liners, confronting impossible horrors, or quietly showing how much these two people have come to rely on each other. For my money, this is The X-Files at or near its absolute peak: scary, funny, strange, emotional, and endlessly rewatchable.

Favourites: Clyde Bruckman’s Final Repose, Pusher, Jose Chung’s From Outer Space

Least Favourites: Teso Dos Bichos, Syzygy, Avatar

The Truth Is Out There

Of course, this is just my ranking. One of the great things about The X-Files is that everyone connects with a different version of the show. Some fans are here for the mythology, some prefer the monsters-of-the-week, some love the lighter, experimental episodes, and some just want Mulder and Scully wandering through the woods with flashlights, investigating the unknown. Even the weaker seasons usually have at least a few moments that remind you why the series became such a phenomenon in the first place.

Whether you agree, disagree, or think I’ve been infected by black oil, let me know how you would rank all 11 seasons of The X-Files. Which season belongs at the top? Which one deserves to be buried in an unmarked file cabinet in the basement? List your ranking in the comments below.