I can tell this book is going to keep me turning the pages as fast as I can! The writing is beautiful, and though it took me a few pages to get my footing in this world, it wasn't long before I was hooked. I didn't realize this book would go back and forth between the two sister's points of view, which completely sold me on this. I love sister stories so much, and with the sci-fi twist and the mystery of what happened to Celia, I can't wait to read what happens next.