Ah the X files T.V. show. Well don't forget that the alien conspiracy was actually a sub plot. It was the motivation for why Mulder did what he did. The vast majority of the shows were about he and Sculley finding the monster or person behind the problem of the day. The antagonist was witnessed and then it died, was killed or "taken care of" by the smoking man crew. Then there was the movie The X files (a good demonstration of what I was trying to say). The movie showed you the antagonist right up front.