Saw IV

During the autopsy of John Kramer, the notorious Jigsaw Killer, a wax-coated microcassette is found in his stomach. This tape sets the stage for the unfolding events as it reveals that Lieutenant Mark Hoffman is also part of Jigsaw's twisted game.

In a dark mausoleum, Trevor and Art are chained to a winch, facing a dire predicament. As the winch pulls them together, Trevor, blinded by fear, attacks Art, leading to a fatal confrontation where Art kills Trevor to escape.

After the chaotic struggle with Trevor, Art discovers a recorded message from Jigsaw along with an envelope containing critical instructions. These revelations provide insight into the machinations of their deadly situation.

Lieutenant Hoffman reflects on the recent disappearance of Detective Eric Matthews and Detective Allison Kerry. The police find Kerry’s corpse, raising the stakes as it becomes clear that they are dealing with Jigsaw’s work once again.

Amidst their investigation, Hoffman, along with FBI Agents Strahm and Perez, deduce that Amanda Young cannot operate Kerry’s trap alone. This realization hints at a larger conspiracy surrounding Jigsaw's manipulations and his accomplices.

Rigg is attacked at his own home and left unconscious. Upon regaining consciousness, he is confronted with a videotape revealing that Matthews is still alive and has a limited time to escape, propelling him into a series of deadly tasks.

Rigg discovers Brenda trapped in a horrific test designed by Jigsaw. Despite being urged to walk away, Rigg’s instincts lead him to intervene, activating a gruesome trap that places both of their lives at risk.

Rigg’s next trial involves abducting serial rapist, Ivan. Rigg forces Ivan into a trap where he must choose between blinding himself or facing dismemberment, contrasting his role as a supposed protector with the brutal reality of the game.

Rigg arrives at a school where he finds Rex and Morgan impaled together in a harrowing scenario. With time running out, Rigg encourages Morgan to make a choice that will significantly affect her fate and that of Rex.

Strahm and Perez realize they too are part of Jigsaw's deadly game, as they investigate the ties linking the victims to Art and Jill Tuck, John Kramer's ex-wife. This discovery leads them deeper into the web of manipulation surrounding Jigsaw.

Flashbacks reveal Jill Tuck's traumatic past, highlighting the loss of her baby Gideon. This backstory connects to John Kramer’s motives and the horrific traps he sets in vengeance against those who wronged them.

As Rigg's journey progresses, he finds himself facing Matthews, Hoffman, and Art in a climactic confrontation. The pressure mounts as they undergo their own tests, with the clock ticking down and lives hanging in the balance.

Rigg’s desperate actions throughout his trials culminate in tragic consequences. The emotional strain and the decisions made force him to confront the true cost of Jigsaw's twisted lessons and the pain they inflict.

The narrative reaches a shocking conclusion as the dark web orchestrated by Jigsaw is unveiled. Rigg uncovers unsettling truths about Hoffman’s role in the games, blurring the line between victim and accomplice.

The film closes with Jigsaw's postmortem commentary, revealing that the sinister events surrounding Rigg, Hoffman, and others are far from over. The chilling implication highlights the endless nature of Jigsaw's cruel game.