Truth lies in 'X-Files' Roger Ebert: "The X-Files: I Want to Believe" arrives billed as a "stand-alone" film that requires no familiarity with the famous television series. So it is, leaving us to piece together the plot on our own. And when I say "piece together," trust me, that's exactly what I mean. In an early scene, a human arm turns up, missing its body, and other spare parts are later discovered.