In the climax of the film, Detective Eric Matthews (played by Donnie Wahlberg) is trapped in one of Jigsaw’s deadly games, facing a series of gruesome challenges designed to test his will to live. Meanwhile, Jigsaw, also known as John Kramer (played by Tobin Bell), is on the brink of death due to his terminal illness.
Throughout the movie, Jigsaw’s protege, Amanda Young (played by Shawnee Smith), has been carrying out his twisted games and abducting victims to test their survival instincts. However, as Jigsaw’s health deteriorates, Amanda becomes increasingly unstable and begins to deviate from his original vision.
In the final act, it is revealed that Amanda has been manipulating the games and sabotaging Jigsaw’s tests, resulting in the deaths of several innocent victims. Her actions betray Jigsaw’s philosophy of testing people to appreciate life and overcome their flaws.
As the tension reaches its peak, Detective Matthews confronts Jigsaw and Amanda in a dramatic showdown. Despite his efforts to reason with them, Detective Matthews is ultimately unable to escape Jigsaw’s traps, and he succumbs to his fate.
In a shocking twist, it is revealed that Jigsaw’s game was not just about testing Detective Matthews but also about teaching Amanda a lesson. Jigsaw reveals that he knows about Amanda’s deception and her role in his failed tests. Disappointed by her betrayal, Jigsaw gives Amanda a chance to redeem herself by testing her own will to survive.
In a desperate bid to prove herself, Amanda fails to follow Jigsaw’s instructions and kills him, believing that it will end her suffering. However, her actions only lead to her own demise, as she becomes trapped in one of Jigsaw’s final traps and dies in agony.
The film ends with Jigsaw’s legacy continuing, as his teachings and games live on through his disciples. Despite his death, Jigsaw’s influence continues to haunt those who survive his deadly trials.
Overall, the ending of “Saw III” is a tense and twisted conclusion to the series’ trademark blend of horror and psychological suspense, with shocking revelations and unexpected twists that leave viewers on the edge of their seats.