When Gillian Anderson first reunites with her "X-Files" co-star David Duchovny in this, the second spinoff movie from the sci-fi TV series, she finds him much as she did in the pilot episode 15 years ago: with his back to her, crouched over a crowded desk. On the wall is the same fuzzily photographed poster of a flying saucer that hovered above that desk for nine seasons, emblazoned with the now-iconic credo, "I Want to Believe."
This nostalgic opening gesture is quickly replaced by a rude awakening. Duchovny wheels around to reveal that his character, Fox Mulder, tireless tracker of inexplicable phenomena for the FBI and perennial thorn in the bureau's side, is looking, well, tired. His firebrand insolence is still in there somewhere, behind an unkempt beard, but it has been subdued by one too many years of fighting uphill battles.
Chris Carter, the director of "The X-Files: I Want to Believe" and father of the cultish Fox Network show, wants to assure us from the outset that nothing, and everything, has changed. This was Carter's M.O. throughout the winding trajectory of his series, which was forever morphing in personality while keeping Duchovny's Mulder and Anderson's agent Dana Scully locked in a state of philosophical (and sexual) tension. He was the believer, she the skeptic; he softened her with alien abduction theory, she blinded him with science.

