With a screenplay by Stephen King and a director he handpicked, you would have hoped that Pet Semetery would nail that dread and heart that made the novel so oppressive and beloved. Unfortunately, accuracy means little if the execution of those book-faithful scenes is middling. Dale Midkiff's Louis Creed is painfully stiff, even in the scenes where he is attempting to convey great emotion, which is at its most jarring when he is paired with Fred Gwynne giving an unforgettable,…