I thought that this book was in our future, but as you progress into the book, it becomes clear that it is around the same time as now, but in a parallel universe. A universe where everyone is born with two souls inside the one body, and by the age of ten, one soul is meant disappear while the other dominates. Well that's what supposed to happen.
Eva is the main character book, but what makes her different to all the other characters in every other book is that she has no control over her body, and is sharing her body with her other soul, Addie. Eva watches through their eyes, and sees Addie live their life, without her. Except in their head, where they communicate. This book makes me think really hard, it seems awful not being able to live, but the way Addie and Eva work together shows that you'll always have someone.
I thought that it was brilliant to have the book told in Eva's point of view. The soul that was shunned and has no control over anything that happens to their body. I thought that she was so strong to keep fighting even when her parents, her friends and even Addie told her to give up, so much stronger than a lot of other protagonists. Eva proves that even if you have nothing, not giving up means losing yourself.
It's really hard to describe what happens in this book, as you can see in my review, that probably makes you more confused than less. I just want to say that this book is beautiful, in every aspect, and shows you that there is always hope, no matter what.