Saw IV is a 2007 American horror movie and the fourth installment in the Saw franchise. It was directed by Darren Lynn Bousman and written by Marcus Dunstan, Patrick Melton, and Thomas Fenton.
It stars Tobin Bell, Scott Patterson, Costas Mandylor, Betsy Russell, and Lyriq Bent.
The movie was released in North America on October 26, 2007, to negative reviews from critics. Despite this, the movie was a box office success, grossing $139 million worldwide.