某天,心理学学生艾比·琼斯(Christine Evangelista 饰)随同学还有教授一同前往帕克精神病院观摩。早在3年前,艾比罹患精神病的父亲便在这所医院自杀。可是为了帮更多患者走出阴影,这个勤奋勇敢的女孩还是踏入了这幢充满恐慌的建筑。在此期间,艾比意外遭到橙色高危精神病患者哈蒙(Dominic Purcell 饰)的袭击,备受惊吓。观摩结束之后,艾比返回寓所,与莱妮(Melissa Ordway 饰)和琳(Carly Chaikin 饰)两名好友进行考前复习。与此同时,哈蒙袭击看守人员后逃跑。警方在调查过程中发现,艾比与哈蒙被捕前杀害的女友十分相像。恶魔出笼,新的杀戮似乎即将展开…… 本片根据制作人位于路易斯安那州的家乡发生的真实事件改编。While on a class observation trip at a local mental hospital, young psychology major Abby Jones (Christine Evangelista), has a chilling encounter with high-risk patient, Harmon (Dominic Purcell). She returns home for an evening of normal study with her two roommates unaware of the darkness shes awakened within him. Later that evening a storm moves in, while Harmon escapes leaving a trail of death, as he makes his toward an unsuspecting Abby. Meanwhile, Abby and her roommate Lynn (Carly Chaikin) receive a visit from Carter Thomas (Scott Elrod), the neighbor cop across the street, warning them about a local peeper lurking in the area. He reassu