The director of the first two SAW horror sequels has signed on for the film's next installment, SAW IV. Darren Lynn Bousman will shoot the next chapter in the lucrative franchise in Toronto, Canada in April (07). The previous three films revolved around the antics of a sickly serial killer named JIGSAW, played by Tobin Bell. Bousman explains, "It's not often that a filmmaker is given the opportunity to follow a genuinely compelling character through two films, much less three. "So I'm very excited about picking up the reins on Saw IV, and delving even deeper into the Jigsaw legend." The Saw series, which has dominated the Halloween box office for the past three years, has grossed more than $400 million (GBP205 million) worldwide. The next installment is due for worldwide release on 26 October (07).