This book was one that kept me thinking long after reading it. As a teacher I cannot wait to introduce it to my students! At what point does free will go away and genetics take over? How much can we trust science when it is ever changing? Ethan has always struggled with being different, especially when his left side has different qualities from his right. As Ethan goes through the wear and tear of adolescence he fears that he will become more and more like his father and lose himself. I have met so many Ethan's in my life who are going through this same struggle. Hopefully this book will help them to think more about their choices.

This was an enjoyable read with a lot of research behind it. It has a nice pacing that keeps the momentum going.

Thanks to NetGalley and the publisher for this eARC. All opinons are my own.