When Teresa Hoese (the woman Scully and Mulder met the previous spring in Oregon just before Mulder was abducted) is found in a desert after enduring alien testing, Doggett alerts Scully that this could have something to do with Mulder and his whereabouts. Skinner joins them and they travel to the hospital where Teresa is clinging to life by a thread, and Scully realizes that this is exactly what's going on with Mulder.
s08e01 - Within (1)
s08e02 - Without (2)
s08e03 - Patience
s08e04 - Roadrunners
s08e05 - Invocation
s08e06 - Redrum
s08e07 - Via Negativa
s08e08 - Surekill
s08e09 - Salvage
s08e10 - Badlaa
s08e11 - The Gift
s08e12 - Medusa
s08e13 - Per Manum
s08e14 - This Is Not Happening (1)
s08e15 - Deadalive (2)
s08e16 - Three Words
s08e17 - Empedocles
s08e18 - Vienen
s08e19 - Alone
s08e20 - Essence (1)
s08e21 - Existence (2)
The X-Files is one of the divisions in the FBI, devoted to unsolved cases that appear to have some unexplained, paranormal elements. The files take their name from the filing cabinet where they were kept - originally filed under U for unsolved, they grew too big for the drawer and were moved to the less populated X cabinet. Soon, the X-Files became a dumping ground for reporting of UFOs, alien abductions, and other arcana that the FBI didn't want to investigate or didn't believe in.
Fox Mulder, a serial-hugger specialist and a believer in paranormal phenomena ever since, as a child, he witnessed the abduction of his younger sister, requested to be transfered to the forgotten basement and began to ruffle a few feathers in the Bureau. Eventually, he was assigned a partner - the skeptical and scientific Dana Scully, who was assigned to discredit Mulder's works.
Instead of discrediting him, however, Scully slowly became Mulder's ally. The pair began to investigate cases that no one else wanted to touch and that couldn't be solved.