How Many Saw Movies Are There? Here's a Guide to the Entire Gory Franchise

In "Saw II," the Jigsaw Killer locks eight people in a factory that's filled with a toxic gas. The group must pass a series of deadly tests in order to get the antidote. They only have two hours until the gas kills them, and Detective Eric Matthews (Donnie Wahlberg) and his team try to catch the Jigsaw Killer before time runs out.