[from trailer]
John: Hello, Michael. I want to play a game. So far, in what mostly could be called your life, you have made a living watching others. Society would call you an informant. A rat. A snitch. I call you unworthy of the body you possess. Of the life you've been given. Now we will see if you are willing to look inward, rather than outward, to give up the one thing you rely on in order to go on living. The device around your neck is a death mask. The mask is on a string timer. If you do not locate the key in time, the mask will close. Think of it like a Venus Flytrap. What you're looking at right now is your own body, not more than two hours ago. Don't worry, you're sound asleep, and can't feel a thing. Taking into account that you are at a great disadvantage here, I am going to give you a hint as to where I have hidden the key. So listen carefully. The hint is this: It's right in front of your eye. How much blood would you shed to stay alive, Michael? Live or die... Make your choice.
While investigating the bloody aftermath of a grizzly murder, Detective Eric Mason has the feeling that it is the work of Jigsaw, the notorious killer who disappeared leaving a trail of bodies - and parts - behind. And Mason is right. Jigsaw is at work again. But instead of two people locked in a room with only one unthinkable way out, there are eight. Eight strangers -- unaware of their connection to each other -- forced to play out a game that challenges their wits and puts their lives in jeopardy.
