D.P.O. (The X-Files)

"D.P.O." is the third episode of the third season of television series The X-Files. The episode first aired in the United States on October 6, 1995, on Fox, being written by Howard Gordon and directed by Kim Manners. The episode is a stand-alone episode, like most episodes of The X-Files, and follows the normal Monster-of-the-Week pattern of the show. "D.P.O." earned a Nielsen household rating of 10.9, being watched by 15.57 million people in its initial broadcast, and received positive reviews.
Read article on Wikipedia