Draco opened his mouth and screamed. Hermione startled away from him, shocked by the voracity of it. His roar was deep and rumbled against her palm which had slid from his shoulder to his chest. When he ran out of air, the echoes of it bounced back toward them, off the unseeable ceilings, tall stacks of indistinguishable from each other pieces of furniture, and back to them in fractured moans and groans like the creaking of old pipes.