[3] Linda Blair’s still got demons, and Richard Burton’s trying to figure out what happened to the nice priests who got pea soup all over them in the first movie. Exorcist II: The Heretic is convoluted and esoteric, the action is minimal, and the horror non-existent. John Boorman (Excalibur, Deliverance) delivers a highly odd, surreal, and ultimately terrible sequel to The Exorcist. The cheap sets, …