I love how the story unfolds with going back in time when the events actually took place and then unfolding the mystery in present day. The book has a very dark tone and that's probably one of the things I liked so much about it. I don't think the story focuses as much on the sibling rivalry as how the tragedy has shaped Lila's life. I didn't connect at all with the parents but really liked all the other characters. It's definitely worth reading.