And Harry was a skilled hunter. He moved through the grounds, checking every lawn and copse until he was confident this elusive spirit wasn't there. Then he began a meticulous search of the house, locking rooms as he ticked off each one. Every now and then, he would catch a flick of movement down a corridor, or through a gap in a door, or between the railings of an upper-floor landing, and it was tempting to go after each one. But he wasn't to be distracted.