Kevin Greutert, director of SAW 6, one of the best in the horror series, has tapped Maggie Grace (“LOST”) to topline Incident On 459, an inflight frightener about a demon possessed passenger on a plane from Boston to London.

Grace plays a hot MILF and psychologist on board the flight with her special needs kid and ex-boyfriend. It’s up to Grace to take on the possessed flier before the plane is either made to crash or blown out of the sky by the Air Force. Cameras roll in September.

Grace is best known for her portrayal of spoiled rich girl Shannon Rutherford on ABC’s Emmy-winning drama “LOST.” She made her major horror film debut in the 2005 remake of John Carpenter’s The Fog and went on to co-star in The Twilight Saga: Breaking Dawn and AMC’s “Fear the Walking Dead.”