The four long house tables in the Great Hall were filling up under the starless black ceiling, which was just like the sky they could glimpse through the high windows. Candles floated in midair all along the tables, illuminating the silvery ghosts who were dotted about the Hall and the faces of the students talking eagerly, exchanging summer news, shouting greetings at friends from other houses, eyeing one another's new haircuts and robes.