"I told him to leave, but he wouldn't. I could tell he was strong, I didn't want to..." he trails off, trying to keep himself from going down that road. "If I never had to meet another witch again..."

He takes a deep breath and clenches his jaw, trying to quell the terror he felt when Childermass was pushing him, threatening him, trying to get answers that weren't there. "He just kept asking and pressing and I had to make him go away, so I stabbed him."