Mulder and Scully rush to find an on-the-run William while the Cigarette Smoking Man pushes forward with his ultimate plan.

While investigating human organ theft, Mulder and Scully uncover a mysterious cult consumed with macabre rituals.

Mulder and Scully investigate the brutal animal attack of a little boy in Connecticut, while suspecting darker forces are at play.

In a world of ever-increasing automation and artificial intelligence, Mulder and Scully find themselves targets in a deadly game of cat-and-mouse.

Skinner goes AWOL when his past comes back to haunt him. As Mulder and Scully try to track him down, their growing mistrust of him reaches its apex.

When a pair of teenage girls attack one another, each believing the other to be a monster, Mulder and Scully find that their investigation could possibly lead back to their long-lost son, William.

Exploring the idea of The Mandela Effect, in which large groups of people remember an alternate history, Mulder and Scully find out how the X-Files themselves may really have originated.

Mulder and Scully investigate a case where people are plagued by their own doppelgangers.

A chilling secret is revealed when an old friend reaches out to Mulder and Scully in a seemingly impossible way.

Mulder and Scully learn that they aren't the only ones desperately searching for their long-lost son, William. The very fate of the world may depend on it.