I've been thinking, and maybe it could go that the Doctor and Jack are touring New York City, when the Doctor sees a newspaper, with an article inside the newspaper about something disturbing, maybe involving a large house on the edge of the city for sale, a mansion, for a very cheap price, and some things it notes about the house makes the Doctor curious, and maybe there'ssomething off about the house...? I'm just giving ideas, considering we have none.