Saw IV is a 2007 Canadian-American horror film and midquel to 2006's Saw III and the fourth installment of the Saw series. It was directed by Darren Lynn Bousman and written by newcomers Patrick Melton, Marcus Dunstan and Thomas Fenton. The film was released in North America on October 26, 2007. The film's North American release date followed the series' tradition that the films be released the Friday before or on Halloween of each year. The film continues the story of the Jigsaw Killer and his obsession with teaching people the "value of their own lives". Despite Jigsaw being killed in the last installment, the film still focuses on his ability to manipulate people into continuing his work of trapping people. The story follows Daniel Rigg being put in a series of tests in order to try and let go of his obsession of saving everyone, whilst at the same time attempting to save his partner.