Hermione: Is it...dead? Harry: I don't think so. Just knocked out. Ugh! Troll bogies. A sudden slamming and loud footsteps made the three of them look up. They hadn’t realised what a racket they had been making, but of course, someone downstairs must have heard the crashes and the troll’s roars. A moment later, Professor McGonagall had come bursting into the room, closely followed by Snape, with Quirrell bringing up the rear.