Saw IV was released in the year 2007。
Following the events of SAW 3, Jeff is now left puzzled as he struggles to survive. Locked in the building, Jeff needs to find his daughter and get out of there before they both die. While searching, he finds a video Jigsaw made after he found out he had cancer. What's on that video brings up a brand new twist that Jeff must figure out before he becomes a murder mystery.