Plot Summary:Mulder and Scully investigate the case of a woman, a nurse in an elder care facility, who claims she was raped at the facility by an invisible spirit. Nurse Michelle Charters has the bruises to prove the attack but not surprisingly, no one will take her seriously given the nature of her claim. The elder care home is primarily for Alzheimer's patients and the doctor there is experimenting with a known drug, one that has not been very successful in the past. He is getting positive results however, even if he can't quite explain them. Incidents continue to occur making believers of the agents who believe that the residents are getting drugs from someone else in the institution.