And he spat in her face.
Harry pulled the Cloak off himself, raised his wand, and said, “You shouldn’t have done that.”
As Amycus spun around, Harry shouted, “Crucio!”
The Death Eater was lifted off his feet. He writhed through the air like a drowning man, thrashing and howling in pain, and then, with a crunch and a shattering of glass, he smashed into the front of a bookcase and crumpled, insensible, to the floor. “I see what Bellatrix meant,” said Harry, the blood thundering through his brain, “you need to really mean it.”
“Potter!” whispered Professor McGonagall, clutching her heart. “Potter— you’re here! What—? How—?” She struggled to pull herself together. “Potter, that was foolish!”
“He spat at you,” said Harry.