The strange alliance of human DNA and a signal from outer space produces a murderous creature that takes the form of a gorgeous blonde. She's soon turning heads-and removing other body parts-on the L.A. singles scene. Can an assassin, a psychic, a biologist and an anthropologist stop her before the human race is destroyed? Ben Kingsley, Forest Whitaker, Michael Madsen, Alfred Molina, Marg Helgenberger, and Natasha Henstridge as "Sil" star.