High Quality Content by WIKIPEDIA articles! "Tunguska" is the eighth episode of the fourth season of the American science fiction television series The X-Files. It premiered on the Fox network on November 24, 1996. It was directed by Kim Manners, and written by Frank Spotnitz and series creator Chris Carter. "Tunguska" featured guest appearances by John Neville, Nicholas Lea and Fritz Weaver. The episode helped explore the series` overarching mythology. "Tunguska" earned a Nielsen household rating of 12.2, being watched by 18.85 million people in its initial broadcast.