"
Irresistible" is the thirteenth episode of the second season of the American
science fiction television series
The X-Files. It premiered on the
Fox network on January 13, 1995. The episode was written by series creator
Chris Carter, directed by
David Nutter, and featured the first of two guest appearances by
Nick Chinlund as the death fetishist killer
Donnie Pfaster. The episode is a
"Monster-of-the-Week" story, a stand-alone plot which is unconnected to the series' wider
mythology. The episode was viewed by 8.8 million people upon its first broadcast, and received positive reviews, with much praise to Chinlund's performance as the antagonist.