Wyatt and Emily presented a similar challenge. On the one hand, I knew a lot about them—certain aspects of their personalities and their ways of living were remarkably clear. That introductory section about Wyatt, his morning rituals and habits, came to me almost fully formed, as if he really existed and I was just putting down the facts about him. Ditto many of the passages about Emily. But demonstrating how these familiar and sympathetic characters could be capable of such acts of darkness was very hard. With Emily especially I struggled with what I wanted the reader to assume was true about her. She has ranged over the various drafts between merely lonely and pathetic and something closer to sociopathic.