A couple seems to have some pedestrian problems. The man and woman have recently relocated from Chicago to London; the new house has issues with its wiring. The man complains to a friend about British customer service reps: "They're not rude, but they're not NOT rude, you know? No one is going the extra mile." One source of tension at home is that the young woman believes in ghosts while the young man does not. Then--in one of the most startling scenes I've ever witnessed in a theater--the young man begins a new conversation with the young woman. And the young woman suddenly evaporates. She does not leave the room; she does not drop through a trapdoor. She evaporates. "She" had been an otherworldly imposter. It's time to call in the Barbara Hershey neighbor. (I refer to this person as the Barbara Hershey neighbor, because she is in every scary movie, and she is sometimes played by Barbara Hershey. She is the PhD who has to recite a nonsense speech a...