“The Power” (*1/2 out of four) was a powerless horror thriller set in 1973 in which a young nurse (Rose Williams) is forced to work the night shift in a crumbling hospital in which she soon realizes that an evil spirit is at work which turns her sanity inside-out and that of everyone around her and she has to escape and try to survive. Drably downbeat and inert and never fully rises above the routine; just because it’s set in 1973 doesn’t mean it has to feel like a movie from 1973. Laura Bellingham’s colorful cinematography provides film’s only “power” and signs of life.