The book is amazing Lockhart does a good job taking plot twist to a new level.What initially begins as a YA novel quickly turns into a mystery of the teenage heart.Her story telling in unparalleled.Again again is a twisty romantic story with well developed characters.The type of YA I love bittersweet, sad and hopeful.In the beginning of the story we met Adelaide who we follow through her journey as she struggles with her feeling towards he brothers addiction and falling in love. We get to see her life choices play out in different universes. The paths she takes and what could have been what never did. The book was beautiful in the sense that the reader gets to see that for very chance you took and didn't take lead to something else happening . It's mainly about accepting that lifes good and bad.