I liked the unusual storytelling format—second-person narrative of one child, then third-person narrative of another, then second-person of the father, then first-person of the mother—if only for its novelty. I'm not sure I understand why the story is told that way or what it's meant to accomplish, but it kept me interested. It felt fairly brave, and not as much like a "Choose Your Own Adventure" novel as I had feared. Unfortunately, I found the structure of the novel more engaging than the story itself. The premise is interesting, but the farther I got in the book, the less I cared about the central mystery (which is just as well, since it's never solved). When I got to the rather lengthy epilogue, I was beginning to lose patience with the book.