"My name is Fox Mulder. Since my childhood, I have been obsessed by a controversial global phenomenon. Since my sister disappeared when I was 12 years old... in what I believe was an alien abduction. My obsession took me to the FBI, where I investigated paranormal science cases through the auspices of a unit known as the X-Files. Through this unit, I could continue my work on the alien phenomenon, and the search for my missing sister. In 1993, the FBI sought to impugn my work, bringing in a scientist and medical doctor to debunk it... which only deepened my obsession for the better part of a decade, during which time that agent, Dana Scully, had her own faith tested. In 2002, in a change of direction and policy, the FBI closed the X-Files, and our investigation ceased, but my personal obsession did not."
[Intro Season 10]