"I don't know what to do with him!" The Doctor gazed at him helplessly, beseechingly. "He's in a cell at the moment, and this place is just about managing to keep him there, but he's got a high level of psychic ability and it's not going to hold him forever. And he's mixed up and hates himself and he seems to want to reform and that seems like the best thing to do, doesn't it? Doesn't it?"