Saw III

Jigsaw è fuggito ancora e continua a terrorizzare l'intera comunità con i suoi enigmi mortali. Questa volta la sua attenzione si concentra sulla dottoressa Lynn Delon, rapita e costretta a trovare una cura che impedisca al cancro di ucciderlo.

Saw II, Eric Matthews (Saw) breaks his foot with a toilet lid to escape his shackle. Six months later, the aftermath of a Jigsaw "game" is discovered by a SWAT team. The victim, Troy, was meant to rip chains from his body in order to escape from a bomb. Detective Allison Kerry arrives at the scene, and points out that the room's exit was welded shut, breaking Jigsaw (Saw character)'s modus operandi of giving his victims a chance to survive. While reviewing the videotape, she is abducted and awakens in a harness hooked into her ribs. Even though she retrieves the key from a beaker of acid and unlocks the harness, she is unable to remove it and is killed when time runs out.

Die Polizei fahndet weiter fieberhaft nach dem Serienkiller Jigsaw. Der ist unterdessen an Krebs erkrankt, weshalb seine Untergebene Amanda die Ärztin Lynn Denlon entführt, einsperrt und mit einem hochexplosiven Halsband versieht. Lynn soll den sterbenden Jigsaw so lange am Leben erhalten, wie das ebenfalls gekidnappte Opfer Jeff benötigt, um eine Reihe von Aufgaben zu lösen. Sollte der Herzschlag des Killers vorher aussetzen, explodieren die Sprengladungen an Dr. Denlons Körper.

Le Tueur au puzzle a mystérieusement échappé à ceux qui pensaient le tenir. Pendant que la police se démène pour tenter de remettre la main dessus, le génie criminel a décidé de reprendre son jeu terrifiant avec l'aide de sa protégée, Amanda... Le docteur Lynn Denlon et Jeff ne le savent pas encore, mais ils sont les nouveaux pions de la partie qui va commencer...

Dra. Lynn Denlon se torna uma peça no último jogo sangrento do assassino Jigsaw. Raptada e levada para um armazém abandonado, ela encontra Jigsaw acamado e morrendo. Sua tarefa é manter o maníaco vivo, dando o tempo suficiente para Jeff, uma vítima, completar uma tarefa. Eles não sabem que Jigsaw, na verdade, tem um plano muito maior e mortal.