Two FBI agents, Fox Mulder the believer and Dana Scully the skeptic investigate the strange and unexplained while hidden forces work to impede their efforts.

Title from container. Originally broadcast in the 2000-2001 television season. Bonus features: documentary "The truth about season eight" ; 7 deleted scenes with optional commentary by Frank Spotnitz and John Shiban ; 7 special effects sequences with commentary by Paul Rabwin ; episode commentary on "Alone" by Frank Spotnitz ; episode commentary on "Existence" by Kim Manners ; character profiles on Alex Krycek, Gibson Praise and John Doggett ; 42 promotional television spots ; 6 international language clips ; all new DVD-ROM game "Existence."

Disc 1.Within ; Without ; Patience ; Roadrunners -- Disc 2. Invocation ; Redrum ; Via Negativa ; Surekill -- Disc 3. Savage ; Badlaa ; The gift ; Medusa -- Disc 4. Per manum ; This is not happening ; Deadalive ; Three words -- Disc 5. Empedocles ; Vienen ; Alone ; Essence -- Disc 6. Existence ; Special bonus features from Season eight.