Blaise had pulled an armchair into the corner of his room, as far away from the door as possible. Hugging his knees, he looked out of the window and back to the door. To and fro, door, window, torn between his desire to flee and prepare himself for an all-out assault. It wasn't as if he was locked in. He had checked. Sneaking out and finding a fireplace connected to the floo should be possible. He had snatched some floo-power when leaving Snape's quarters. The little pouch was a comforting weight in his pocket. But then what? He had no idea where he was? Would the powder be enough to return to Hogwarts? And even then, what would happen when Potter returned? They had an arrangement. Would the other boy simply leave him be? A month ... even a week ago, he would have thought so. But after today ... not likely. He knew too much.