The film opens with the autopsy of the deceased Jigsaw Killer, John Kramer, who was killed in the ending climax of Saw III. During the operation, a wax-coated audio cassette is found in Jigsaw's stomach. Detective Hoffman is called to the scene, where he plays the tape which states that, although Jigsaw is dead, "the games have just begun."……

Jigsaw and his apprentice Amanda are dead. Now, upon the news of Detective Kerry's murder, two seasoned FBI profilers, Agent Strahm and Agent Perez, arrive in the terrified community to assist the veteran Detective Hoffman in sifting through Jigsaw's latest grisly remains and piecing together the puzzle. However, when SWAT Commander Rigg is abducted and thrust into a game, the last officer untouched by Jigsaw has but ninety minutes to overcome a series of demented traps and save an old friend or face the deadly consequences. Lionsgate
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