"Per Manum" is the thirteenth episode of the eighth season of the American science fiction television series The X-Files. It premiered on the Fox network on February 18, 2001. Written by Frank Spotnitz and series creator Chris Carter, and directed by Kim Manners, the episode helps to explore the series' overarching mythology. "Per Manum" received a Nielsen rating of 9.4 and was watched by 9.61 million households.