Squeeze

Mulder and Scully investigate a series of murders where there appears to be no tangible method for the murderer's entrance and escape. Eugene Victor Tooms (Doug Hutchison), a seemingly normal janitor, is suspected by Mulder to be a mutant who kills his victims and extracts their livers in order to prolong his existence. Also guest stars Donal Logue, Henry Beckman, Kevin McNully, Terence Kelly.