Lurking behind it all, though, was the mysterious Cigarette Smoking Man, who went from the background of Season 1 to the show's main villain. According to the Season 4 episode, "Musings of a ...
Instead, the Cigarette Smoking Man orchestrates a giant fire that destroys Mulder’s office, and the X-Files with it. The note of finality in the episode’s ending made it a fitting conclusion ...