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.
演员：乔·斯皮内尔 卡罗琳·莫罗 阿比吉尔·克莱顿 Kelly Piper Rita Montone 汤姆·萨维尼 Hyla Marrow James L. Brewster Linda Lee Walter Tracie Evans 莎伦·米切尔 Carol Henry Nelia Bacmeister Louis Jawitz Denise Spagnuolo 威廉·拉斯蒂格