Cas watched the girl from across the street. She's a witch, he thought, the boys would kill her without a thought. Nostalgia washed over him. The boys. If only he could tell them that he was back…but he couldn't, not yet. First he had to take care of the girl. She turned and saw him, and smiled and waved kindly, but he could see. He could see the darkness in her. A darkness he knew all too well. A darkness that had once consumed him.