Saw is a 2004 American independent horror film directed by James Wan. The screenplay, written by Leigh Whannell, is based on a story by Wan and Whannell. The film stars Cary Elwes, Danny Glover, Monica Potter, and Whannell. It is the debut of Wan and Whannell and the first installment of the seven-part Saw film series. The film's story revolves around Adam (Whannell) and Lawrence (Elwes), two men who are chained in a dilapidated subterranean bathroom and are each given instructions via a microcassette recorder explaining how to escape. Adam is told he must escape the bathroom, while Lawrence is told to kill Adam before a certain time, or Lawrence's family will die. Meanwhile, police detectives investigate and attempt to find the victims' location and apprehend the mastermind behind this "game" and several other similar incidents.