Experience the terror, from the beginning, with the first chapter of the saga, directed by Ridley Scott and starring Sigourney Weaver in her breakout performance as Ripley. When the crew of the space-tug Nostromo responds to a distress signal from a barren planet, they discover a mysterious life form that breeds within human hosts. The acid-blooded extraterrestrial proves to be the ultimate adversary as crew members battle to stay alive and prevent...