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. Sharon visits Skinner at his home. After she leaves he falls asleep, seeing the old woman again. He awakens as detectives enter the house, telling him Sharon has been run off the road and severely injured. Skinner admits to Mulder that he saw the woman during his experience in Vietnam, but passed it off as being due to drugs. It is revealed that The Smoking Man is observing their conversation through the one-way mirror of the interrogation room. Mulder investigates the airbag on Skinner's car, which was the one used to hit Sharon. Scully defends Skinner to the Office of Professional Responsibility, but it does no good and he is fired. Mulder believes this was done to weaken the X-Files. Mulder, with the help of Agent Pendrell finds a face imprint in the airbag which is not Skinner's. He goes to see the prostitute's boss again but discovers that she has been murdered. The agents hope to use Judy, an employee who saw the man who actually hired the prostitute and use her to set up another meeting with him, unaware that the assassin is nearby and is aware of their plan. They agree to meet at the Ambassador Hotel in an hour. Skinner goes to see his wife, telling her why he could not sign the divorce papers. An alarm on Sharon's vital sign monitor starts sounding, but as Skinner is about to run for help, the old woman once again takes the place of Sharon, beckoning him to come closer. As Skinner leans in, he sees his wife again, now awakened from the coma; she begins to tell him something right before the scene cuts. Mulder waits in the hotel bar while Scully guards Judy in a hotel room. The assassin enters the room to attack them but is quickly killed by Skinner, who was also there. The dead man's identity is unknown. After being rehired, Skinner returns to work, declining