本片由英格玛·伯格曼编剧,剧情改编自伯格曼父母的婚姻故事。其母安娜原是富家千金,偶然认识了贫穷的哲学系学生亨利·伯格曼,执意要嫁给他,不惜违背母亲的旨意。但她前往亨利的故乡结婚之后,才发现地处穷乡僻壤的婚姻生活并不如想象中美好,此时她才回想起母亲对她那美好的用意。。改编自Karen M. McManus的畅销小说,讲述五个学生一起被留堂,却只有四个人活着走出教室,预告中的画外音讲述者Simon死去了,另外四个人中有一个人引发了Simon的死,而“没有一个人是完全无辜的”。。The movie is based on the suspense short film nominated for the Golden Méliès to the Best European Fantastic Short Film, winner of more than 30 awards and screened by more than 200 film festivals. It was defined by the critics as "a cult short film".。