凶残成性的“竖锯”（托宾•贝尔 饰）带着更新更诡异的杀人游戏回来了。又一位带着“竖锯”标签式的死亡特征的受害人被警方发现，偷怕这令探员艾里克•马休斯(当尼•沃伯格 饰)重新回到之前的惊悚噩梦之中。但出人意料的是杀人者留下了十分明显的线索，偷怕警方的调查取证工作十分顺利。其实，所有这一切都在“竖锯”(托宾•贝尔 饰)的掌控之中，留下线索并令自己被捕正是他进行下一个邪恶游戏中的重要前提：即将有8位相互陌生的人被迫加入游戏，而更疯狂的是，除此之外的另一位游戏者已经被锁定为马休斯。在“竖锯”的策划下，又一场充满惊险的生死游戏就要开始了……
回复 :A family with buried secrets reunite at a farmhouse after two decades to pay for their past sins.
回复 :美丽的女孩竹内麻实因脑中长有肿瘤而住院治疗，虽然病症不甚严重，且有办法可以治愈，但是麻实似乎对死亡极其敏感，她生怕自己某天一睡不起，以至于对睡眠产生了深深的恐惧。负责麻实的年轻医生山内对此颇为挠头，不过他的同事黑田好像面临更大的难题。黑田所负责的病人向田哲郎患有一种奇怪 的病症，每当哲郎睡下时，他便进入了一场漫长而痛苦的梦中旅行。在梦中他度过了一个月、两个月、十年乃至更长，致使他醒来完全忘记前一天发生的事情，精神几近崩溃。直到某一天，哲郎梦见了漫无边际的永远……本片根据日本恐怖漫画家伊藤润二的同名短篇改编。
回复 :January is forced to return home after six years traveling abroad. A near-fatal accident has left her temporarily wheelchair bound and depleted of her long-term memory. She is accompanied by her boyfriend 'Callum' whom she met whilst traveling. He was also the driver in the fateful accident. Not only has she forgotten her family, but her childhood as well and is surprised to discover that her home is a stately manor in the middle of the country-side. As January tries to settle in, she finds herself becoming even more estranged from her family, who just want their daughter back. The trouble is, she cannot remember who that daughter was, or why she ran away in the first place. Desperate to discover why she left all those years ago and with Callum's help, she sets out to find the truth. They soon discover the family are not as loving as they seem to be. Was there a dark reason why she left them in the first place?
