The film was given a small production budget and was shot in 18 days. This proved successful in 2003 as producers from Evolution Entertainment were immediately attached and also formed a horror genre production label, Twisted Pictures. In order to help attract producers they shot a low-budget short film of the same name from a scene out of the script. The film was originally written in 2001, but after failed attempts to get the script produced in Wan and Whannell's home country of Australia, they were urged to travel to Los Angeles. The screenplay was written by Whannell, who co-created the story with Wan in their respective screenwriting debuts. The frame story follows Jigsaw's latest victims (Whannell and Elwes), who awaken in a large, dilapidated bathroom, with one being ordered to kill the other to save his own family. The film tells a nonlinear narrative, revolving around the mystery of the Jigsaw Killer, who tests his victims' will to live by putting them through deadly 'games' where they must inflict great physical pain upon themselves to survive. It is the first installment in the Saw film series, and stars Whannell, Cary Elwes, Danny Glover, Monica Potter, Michael Emerson, Ken Leung, and Tobin Bell. Saw is a 2004 American horror film directed by James Wan, in his feature directorial debut, and written by Leigh Whannell from a story by Wan and Whannell.

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