Originally Posted by Smiert Spionam
I totally recognize that episode title, but can't remember at all what happened :/
It was from the 5th season. I pulled the synopsis from IMDB:
Scully is worried about Mulder when during an undercover sting operation, Mulder apparently lets a suspect, Jacob Steven Haley, escape. Haley is a right-wing anti-government militiaman who was observed in a park handing an envelope to someone who the FBI thinks was selling weapons. After Haley's escape, they find the other man dead with most of his flesh eaten away. Concerned that militiamen are in possession of biological weapons, FBI assistant Director Skinner takes Scully into his confidence and tells what is really going on.