"Jigsaw" John Kramer is dying of a brain tumor, and it's up to Dr. Lynn Denlon to keep him alive while they watch Jigsaw's latest victim Jeff go through a series of tests. Why would Lynn help Jigsaw? Well if Jigsaw's heart stops the bomb strapped to Lynn's head will explode. It's the most intricate Saw movie yet, and we review it on Now Playing!