Marcus Dunstan, born September 19, 1975, is an American filmmaker who works as both a screenwriter and a director. He first gained widespread recognition after winning the third season of Project Greenlight alongside his writing partner Patrick Melton; their winning script became the 2005 horror film Feast. Dunstan later made his directorial debut with the 2009 thriller The Collector, which he co-wrote with Melton, and he returned to direct its 2012 sequel, The Collection. His screenwriting credits include several entries in the Saw franchise—Saw IV (2007), Saw V (2008), Saw VI (2009), and Saw 3D (2010)—as well as the 2011 film Piranha 3DD. Beyond these, he has written and directed additional genre projects, including the 2016 film The Neighbor. Throughout his career, Dunstan has been closely associated with the horror genre, building a reputation through his collaborations with Melton and his contributions to major horror franchises. His work on the Saw series helped shape one of the most successful horror franchises of its era, and his Project Greenlight win launched a lasting partnership that produced numerous screenplays and directing projects.
