Jigsaw and his apprentice Amanda are dead. Upon the news of Detective Kerry's murder, two seasoned FBI profilers, Agent Strahm and Agent Perez, arrive at the depleted police precinct and help veteran Detective Hoffman sift through Jigsaw's latest grizzly game of victims and piece together the puzzle. But then SWAT Commander Rigg, the only local officer who has yet to experience Jigsaw's handiwork, is suddenly abducted. Thrust into the madman's harrowing game, he has but ninety minutes to overcome a diabolical series of interconnected traps--or face the deadly consequences. Rigg's citywide pursuit leaves a wake of dead bodies, and Detective Hoffman and the FBI uncover long hidden clues that lead them back to Jigsaw's ex-wife Jill. The genesis of Jigsaw's evil is unveiled, exposing the puppet master's true intentions and the sinister plan for his past, present and future victims.