Meeting insecure women through an on-line service, a serial killer seduces his prey with the right words. However, Mulder and Scully determine these killings are far from ordinary by the presence of a strange substance coating the victims, a substance which seems to digest the fatty acids in flesh.

original airdate--November 3,1995                rating--14.83 million

music--theme song "X-Files" by Mark Snow"

Trivia: 2shy was apparently supposed to air earlier in the season. This episode takes place in late August, and Clyde Bruckmans Final Repose (aired earlier) is supposed to take place sometime in September.