“Stay there!” she said, and she sprinted up the stairs to the girls’ dormitories. Harry and Ron barely had time to exchange mystified looks before she was dashing back, an enormous old book in her arms. “I never thought to look in here!” she whispered excitedly. “I got this out of the library weeks ago for a bit of light reading.” “Light?” said Ron, but Hermione told him to be quiet until she’d looked something up, and started flicking frantically through the pages, muttering to herself.
