Jigsaw is back. The brilliant, disturbed mastermind who wreaked havoc on his victims in last year's SAW is back for another round of horrifying life-or-death games. When a new murder victim is discovered with all the signs of Jigsaw's hand, Detective Eric Mathews (Donnie Wahlberg) begins a full investigation and apprehends Jigsaw with little effort. But for Jigsaw, getting caught is just another part of his nefarious plan. Eight more of his victims are already fighting for their lives - and now it's time for Mathews to join the game…