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

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

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

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

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

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

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

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

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

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