Then Hermione moved off. She picked her way carefully through the first floor, past classrooms draped with the Death Eater banner - acid green, with a flayed silver skull surrounded by a serpent on a black circle - but found the place silent. It felt more like a morgue than a school, she thought, as she moved through the frigid air. She disappeared in and out of view, through intermittent shafts of moonlight, that streamed in from the high windows and scorched the gloom that pervaded the place.