定理

 富有魅力的牧场主菲尔·伯班克（本尼迪克特·康伯巴奇 饰）让他周围的人又敬又怕。当他的兄弟将新婚妻子以及她的儿子带回家时，菲尔百般折磨他们，直到有一天，他发现自己对爱也存有一丝渴望。

　　The nightmare was about a demonic possession. A long time ago, there was an evil in a small town and it was jealous of the girl and would never let her go, since the devil loved the girl. One night, the evil raped the girl and she became pregnant. After months the girl could not hide her baby, her father figured her secret out and clapped the girl in irons and locked her room door. But the evil put the gun to her father' temple and saved the girl. The father had a stroke and had been sleeping on the bed for three months and died. Time went on and the girl brought a child into the world. Naturally, people who were living in the village heard the story and they did not want to see neither the girl nor the baby since when the baby was born, plants dried in the field, fishes lost in the lake and people had prayed to the god for rain, but nothing changed in the village. People got so angry, dug a hole in front of the fountain, put her into the hole and threw stones at her face. The girl died soon after. The evil went off the deep end, took a revenge of the village and killed everyone except two sisters because the evil wanted them to take care of its baby...

　　西雅图发生一宗商店杀人案，曾被告谋杀亲妻的法医大卫前往勘验。 无意中却在凶案现场发现与妻子遭谋害时的相同线索，于是他决定展开调查。 然而调查工作始终毫无展获，直到他在募款晚会中结识一位美丽的神经学教授玛莎。 玛莎正研究某种特殊配方药剂，可将老鼠的记忆力进行移植。 这使得大卫突发其想，偷走药剂并将死者的记忆力注入自己体内进行人体试验，好一睹凶案经过，找出凶嫌破案。　　就在大卫一心想帮助警方破案的同时，凶嫌却在与警方对峙时中枪身亡。 失去唯一线索的大卫，只能借用已死凶嫌的记忆找出下一步线索。 原以为到此即将结束的凶案及往日冤屈，却在大卫亲身体验已死凶嫌的记忆过程中全面翻转。 他发现了攸关自身的天大谎言…

　　1997年，一部来自挪威的惊悚片《失眠者》上映后获得好评，《芝加哥太阳报》的著名影评人罗杰，艾伯特给出了3星半的高分，他盛赞该片“不仅仅是一部惊悚片或动作片，而是一次心理学上的探索与学习”。两犯罪调查者到挪威北方一个镇帮助解决一个年轻的女孩的谋杀案，谁知陷入了巨大的困境之中。