When the Viking space capsule suddenly returns to Earth from its long ago trip to Mars, it brings with it an intelligent visitor that is part "Alien" and part "ET". Encased in armor, it extends a humanlike form from its shell to examine its surroundings and shows an interest in humans including a soft caress of a female scientist prior to the Army killing it. This only enrages its sibling.
本·怀特海德, 彼得·凯, 劳伦·帕特尔, 里斯·谢尔史密斯, 戴安·摩根, 阿卓艾·安多, 穆兹·卡汗, 伦尼·亨利, Victoria Elliott, 约翰·斯帕克斯, Jon Glover, Bethan Mary-James, 玛雅·索地, Tom Doggart, Richard Beek, 梅林·科罗星汉, 戴维·霍尔特, Lizzie Waterworth, Adrian Rhodes, Roman Kemp