If a very handsome and friendly young veteran named David visited your home one afternoon with a warm smile and some very kind words about your son whom he served with overseas....wouldn't YOU invite him over to stay? That's the main question which kicks off this lean, mean horror thriller directed by aspiring genre master Adam Wingard (You're Next, Godzilla Vs Kong) and starring Dan Stevens (Downton Abbey, Cuckoo) AS David, the titular guest. It was released ten years ago to much...