Math.........the military..............and serial killers........

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Saw IV
R
 2007 ‧ Thriller/Splatter film ‧ 1h 43m
Play trailer on YouTube
5.9/10IMDb17%Rotten Tomatoes36%Metacritic
During the autopsy of serial killer Jigsaw (Tobin Bell), a cassette tape is discovered in his stomach in which he warns that his gory games will continue. Sure enough, SWAT Lt. Daniel Rigg (Lyriq Bent) is forced to follow a blood-drenched trail of torture, dismemberment and death in order to find tw… More
Release date: October 26, 2007 (USA)
Director: Darren Lynn Bousman
Box office: 139.3 million USD
Screenplay: Marcus Dunstan, Patrick Melton
Executive producers: James Wan, Leigh Whannell, Daniel J. Heffner,Jason Constantine, Stacey Testro, Peter Block