Darren Lynn Bousman will shoot the next chapter in the lucrative franchise in Toronto in April.
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 worldwide.
The next installment is due for worldwide release on Oct. 26.
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