吉尔·塔克(贝茜·拉塞尔 Betsy Russell 饰)向警方和盘托出竖锯事件的始末,而侥幸逃脱死亡威胁的马克·霍夫曼(科斯塔斯·曼迪勒 Costas Mandylor 饰)则向警方发出警告,势要杀掉吉尔不可。警署上下如临大敌。另一方面,自称竖锯游戏幸存者的波比·达根(肖恩·派特里克·弗兰纳里 Sean Patrick Flanery 饰)高调现身,演讲、出书、接受电视台专访、组织幸存者自救会,风光无限之时名利双收。然而波比只是一个为搏出位的骗子,他的谎话骗过了大多数人,却骗不了竖锯约翰(托宾·贝尔 Tobin Bell 饰)。一场针对波比及其团队的残酷生存游戏拉开序幕……
本片为电锯惊魂系列第七部,制作成3D影片上映。
A horror novelist begins to fear his stories may have a life of their own.
Bestselling horror novelist Christopher Roth (Joaquim De Almeida) feels in need of a change, the gruesome ideas in his novels are starting to take over his dreams and have him asking the question: How long before I become one of the insane killers I write about? In need of a break, he and his wife Catherine head off to a remote house in Umbria, Italy. Roth starts work on a new romantic novel and all seems to be going well but it s not long before this idyllic world is shattered. A young couple is brutally murdered in the woods near the Roths rented house, and Catherine has disappeared. A letter from the killer is on Christopher s table, accompanied by a horrific photo ... and here begins the Roths worst nightmare. A nightmare whose violence is greater than anything Christopher had ever envisioned.