 " 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 . 
 " Irresistible " <a href='drop_aux' title='1'><mark>is</mark></a>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 <a href='drop_aux' title='2'><mark>is</mark></a>a " Monster @-@ of @-@ the @-@ Week " story , a stand @-@ alone plot which <a href='drop_aux' title='3'><mark>is</mark></a>unconnected to the series <a href='null_genetive' title='4'><mark>'</mark></a>wider mythology . The episode was viewed by 8 @.@ 8 million people upon its first broadcast , and received positive reviews , with much praise to Chinlund <a href='null_genetive' title='5'><mark>'s</mark></a>performance as the antagonist . 
 Irresistible  da thirteenth episode of the second season of tdaAmerican science fiction television series Thda @-@ Files . It premiered on the Fox network on January 13 , 1995 . Thedaisode was written by series creator Chris Carter , directed by David Nutter , and featured the first of 2 guest appearances by Nick Chinlund as the death fetishist killer Donnie Pfaster . The episode a " Monster @-@ of @-@ the da Week " story , a stand @-@ alone plot which unconnected to the sdaes  wider mythology . The episode was viewed by 8 @.@ 8 million pple upon its first broadcast , and received positive reviews , with much praise to Chinlund  performance as the antagonist .