Spoiler Alert: Jigsaw and his apprentice Amanda Young are dead. Upon hearing the news of Detective Kerry's murder, two seasoned FBI profilers (Agents Strahm and Perez) arrive at the depleted police precinct and help veteran Detective Hoffman sift through Jigsaw's latest grisly game of victims and piece together the puzzle.
But when SWAT Commander Rigg, the last officer untouched by Jigsaw, is suddenly abducted and thrust into the madman's harrowing game, the officer has but ninety minutes to overcome a series of interconnected traps, or else 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.
Save yourself the ten dollars/euros/quid/whatever it costs to go see the movie and buy the costume (a standard issue tool) instead.