"Yes." His expression went blank as he realized what he had said. He looked at the empty vial clutched in his hand, and then back to her. She knew the second realization hit him. Snarling, he threw the vial across the room, where it shattered upon impact. "You fucking bitch!" He went to curse her, but Hermione was faster. She had thrown up a shield spell and then darted to the side. She cast a disarming spell that he spun to avoid, giving Hermione the perfect opportunity to land a stupefying spell. It threw him back into the wall, and she winced as he crumpled, unconscious.