The Smoking Man
Covarrubias returns in the seventh season finale "Requiem", restored to health. She makes contact with Krycek at the behest of The Smoking Man, who wishes to resume the work of the now-eradicated Syndicate. Having been given the location of a downed UFO, she and Krycek betray The Smoking Man, instead going to FBI assistant director Walter Skinner and Mulder to inform them about the craft. They later turn on The Smoking Man, pushing him down a flight of stairs and leaving him for dead.