Saw II (2005)

Police informant Michael Marks awakens in a room with a spike-filled mask locked around his neck. He has one minute to cut into his eye to obtain the key, but can’t bring himself to do it and is killed when the mask closes. At the scene of Michael’s game, Detective Allison Kerry finds a message for her former partner, Detective Eric Matthews, and calls him in. Matthews joins Kerry and Officer Daniel Rigg in leading a SWAT team to the factory which produced the lock from Michael’s trap. There they apprehend John Kramer, the Jigsaw Killer, who indicates computer monitors showing eight people trapped in a house, including his only known survivor Amanda Young, Matthews’ son Daniel, and six other victims: Xavier Chavez, Jonas Singer, Laura Hunter, Addison Corday, Obi Tate, and Gus Colyard. A nerve agent filling the house will kill them all within two hours, but John assures Matthews that if he follows the rules of his own game, he will see Daniel again. At Kerry’s urging, Matthews agrees to buy time for the tech team to arrive and trace the video signal. During their conversation, John reveals to Matthews that one of his main motivations to become Jigsaw was a suicide attempt after his cancer diagnosis, which led to a newfound appreciation for life; his games’ purpose is to help his victims develop the same appreciation.

The group is informed by a microcassette recorder that antidotes are hidden throughout the house; one is in the room’s safe, and the tape provides a cryptic clue. Gus ignores a warning note and uses the key provided with the cassette on the door, which triggers a gun through the peephole that kills him. Once the door opens, they search the house and find a basement, where Obi, who helped with the abductions, is killed in a furnace trap while trying to retrieve two antidotes. In another room, Xavier’s test involves digging through a pit filled with syringes to retrieve a key to a steel door in two minutes, but he instead throws Amanda into the pit.