Numbing, swirling white mist was filling Harry’s brain… What was he doing? Why was he flying?

Norris, were safely in their office… nothing else seemed to be moving apart from Peeves, though he was bouncing around the trophy room on the floor above… Harry had taken his first step back toward Gryffindor Tower when something else on the map caught his eye… something distinctly odd. Peeves was not the only thing that was moving. A single dot was flitting around a room in the bottom left hand corner—Snape’s office. But the dot wasn’t labeled “Severus Snape”… it was Bartemius Crouch. Harry stared at the dot. Mr. Crouch was supposed to be too ill to go to work or to come to the Yule Ball—so what was he doing, sneaking into Hogwarts at one o’clock in the morning?