When the story begins, Professor Lindstrom is on an airplane in order to go to a conference. However, he notices the member of the groundcrew has weird hands....indicating he's an alien! So, Lindstrom storms off the plane...and later, it crashes killing everyone aboard!
David Vincent is trying to get ahold of Lindstrom, as he finally has found someone who ALSO knows about the alien invasion. The professor also has some proof of the conspiracy...and David wants to discuss this with him. But before they have much chance to talk, the professor is murdered. And, soon you realize one of THEM is the professor's son (Roddy McDowell)...who is on mind-altering drugs to make him work for the aliens! When one of the son's friends learns about this (Harold Gould), he is 'taken care of' by the aliens. What's next? See the show.
This is an exceptional show...better than the pilot episode actually. It also features a very impressive cast...not just McDowell and Gould but also Dabs Greer and Laurence Naismith. Well written, fun to watch and, above all, incredibly paranoid and unique. Oh, and violent and explosion filled at the finale...and very satisfying to watch.