"I want to grow up" Did you say it when you were a kid? I know I did. Have you regretted growing up at some point in your life? Have you wished you could be a careless child once again? I know you have. Everyone has. The more you grow the bigger the challenges, the obstacles, the pain. Life gets serious. You get serious. You forget to smile at the morning sun shining down your face. You are too absorved by your problems to notice the beautiful world surrounding you. And when life gets hard, you wish more than anything to turn back in time and be that small child who did not know anything when he said "I want to grow up"

Bree and Eve share one body, but they are two girls as different as day and night. Eve is secretive and unpredictable. Bree withholds nothing from her other half. Eve prefers to create resolution through violence. Bree can barely stand the sight of blood. But one goal unites them: desire to be safe from the Trackers who hunt their kind. And for years they wander from city to city, in search of freedom and the little brother Bree believes is still alive. When Bree meets Daniel, a young man with dangerous connections and a penchant for taking in strays, including her, she finds it hard to move on. But the secret she hides risks doing more than driving them apart. It might just turn them into enemies. There's also Tristan, a boy with secrets of his own-secrets that help Eve. As her strength grows and Bree struggles to keep up, the two girls are pitted against each other in a battle over the body they share. And with the Trackers closer than ever to finding them, there's a chance neither of them will make it out alive.