《心慌慌》是由布莱恩·克劳斯,凯文·格雷维奥斯,路易斯·赫特哈姆,主演的一部恐怖片，Not long after John Chambers and his family arrive at their new home in a small country town of Pennsylvania, John begins to experience sleep paralysis. Lying there paralyzed, trapped within his own nightmare, other-worldly beings visit John. They are entities which exist in the darkest shadows of the night and can only be seen out of the corner of one's eye. These encounters begin to haunt John, transforming to plete terror as he discovers the entities' sole purpose... the abduction of his seven year old son. In the end, John will uncover the town's horrific secret, a portal on his land, and make one last attempt to save his son before the shadow people permanently take him away to their world.