俄亥俄州赫灵顿高中，似乎就在一夜之间，学校的老师以及部分优等生就变得十分奇怪。原本态度和蔼的他们如今冷峻阴森，而这种情况似乎愈演愈烈。 问题学生凯西（Elijah Wood 伊利亚·伍德 饰）和黛丽拉（Jordana Brewster 乔丹娜·布鲁斯特 饰）偶然机缘躲进了衣橱，并由此见证了护士罗莎（Salma Hayek 饰）被残忍杀害的场面。但未过多久，罗莎又完好无损地出现众人面前，表情却如其他老师一般阴森。凯西等人逐渐意识到，这一连串事件和他们发现的某种神秘生物有关，而今这种生物似乎正以令人难以想象的恐怖速度大肆蔓延。危险不断迫近……
不知从何时起，萧索的苏格兰街头出现了一个神秘女子（斯嘉丽·约翰逊 Scarlett Johansson 饰），她身着皮草，驾驶一辆汽车，不苟言笑的面庞隐约间弥散着摄人魅力。她时不时地与路边的男人搭讪，向他们问路，间或载着相中的男人同归。她走向黑暗的劲头，被欲望支配的男人们紧随其后，却全然未能觉察自己步入了怎样的深渊。男人有如飞蛾扑火，被抽取了骨血，只剩空空皮囊，薄如蝉翼。直到某个晚上，女人搭载了一个相貌极其丑陋的男子。他宛如怪物一般，自知丑陋而深深隐藏自己。女人如往常一样接纳了他，而从第二天起，似乎女人发现自己在悄悄发生着变化。她发现了这幅皮囊的可欣赏之处，享受作为女人的乐趣，却几乎忘记了本来的面目……
恐怖事件接二连三地在某军事基地发生，外星生物在人们熟睡的时候正大批侵入人体和大脑，进而毁灭人类……玛蒂和弟弟跟随从事环保工作的爸爸来到一个军事基地，调查那里的化学污染情况，恐怖之事从此接踵而来。刚进基地玛蒂就觉得那里的人都很怪异。原来这个基地已被外星来的一种生物所占领。它们趁人们熟睡的时候侵入人的体内和大脑，让他们成为活死人，企图籍此占领所有的军事基地。进而毁灭人类。玛蒂的父母及弟弟都相继被外星生物杀死。玛蒂在飞行员蒂姆的救助下逃出该基地，并在路上炸毁了将外星生物运往其它军事基地的卡车。但除了他们俩之外，又有谁会相信这段经历呢？
A young couple purchase their new home to start a life together, only to find out the elderly couple next door have other plans for them.
爱丁堡外科医生罗伯特·诺克斯博士需要尸体来研究人体的功能；当地的无名小卒Burke和Hare想方设法为他提供新鲜的标本。。。
Summer, unhappy with her boyfriend, receives a mysterious email inviting her out to a spiritual obstacle course. Summer gathers her four friends, each battling a dilemma of their own, to drive to the Sedona Desert, where they are promised this “vortex” will improve their lives. They embark on these courses with the help of their uncanny guide Hermes, who leads them into a series of unusual practices. Little do they know they are being monitored by mysterious hooded entities, eager to take over their bodies.
Mona and her ex-girlfriend, Jules, broke up six months ago and they still can't manage to have a conversation that doesn't dissolve into an argument. It wouldn't be such a problem if they didn't work in neighboring retail shops and have to see each other every day. Meanwhile, something weird is going on with the residents of their small town. Some of them are getting sick, others are acting a little less human and a lot more like robots. Can Mona and Jules set aside their relationship drama long enough to avoid the body snatching invaders?
A bizarre visit with an estranged friend, an unexplained scar, and vivid, violent dreams of an ominous tunnel have Sandy worried something might not be right with her. As she begins to feel sick she becomes more and more paranoid that something is living inside her. Something that wants to become her.