 He received some criticism for the graphic violence portrayed in the film, particularly one scene where the killer ties a woman to a tree, attaches a knife to the end of a trombone, then repeatedly stabs her while playing the instrument.Pierce said he purposely made the film violent because he felt the real-life situation was horrific and did not want to glaze over it.While filming horror scenes, he tried to create a suspenseful mood by clearing the set of everyone but the essential cast and staff, then refusing to let them talk to each other as the scenes were shot.