St. Vincent sets out to make a documentary about her music, but when she hires a close friend to direct, notions of reality, identity, and authenticity grow increasingly distorted and bizarre.
饱受癌症折磨,“竖锯”约翰·克莱默(Tobin Bell 饰)油尽灯灭。然而他所创造的“拼图杀人案”却并未就此停止,反而愈演愈烈。警官马克·霍夫曼(Costas Mandylor 饰)曾假借“竖锯”之名向残害他家人的凶手复仇,但他很快成为约翰的猎物。经过一波三折,霍夫曼成为“拼图杀人案”的接班人,只是约翰警世救人的初衷被彻底抛却,取而代之的无休…