The X-Files, Season 4

Scully:
Four years ago, Section Chief Blevins assigned me to a project you all know as the X Files. As I am a medical doctor with a background in hard science, my job was to provide an analytical perspective on the work of Special Agent Fox Mulder, whose investigations into the paranormal were fueled by a personal belief that his sister had been abducted by aliens when he was 12. I come here today, four years later, to report on the illegitimacy of Agent Mulder's work. That it is my scientific opinion that he became over the course of these years a victim. A victim of his own false hopes and of his belief in the biggest of lies.