Skinner sees the old woman looking at him on a city street. However, when he pursues the old woman, he instead finds Sharon. The agents talk to Sharon, who says that the marriage failed because of Skinner's emotional distance. Scully learns that Skinner had been receiving treatment for a sleep disorder, in which he apparently had dreams about being suffocated in bed by an old woman. She fears that Skinner may have unwittingly killed Sayles in his sleep. However, Mulder believes that Skinner may be having visions of a succubus, a female demon, with the mention of similar symptoms of people's bad dreams they've experienced.