Logan is about to turn twelve, but instead of being excited about his birthday party, he's starting to feel... different. Something strange is happening to his body, especially when he gets angry. He can feel himself morphing, changing into something he's never seen before. But there's something else that's gnawing at him, too. Memories of his mother changing in the same way when she was mad. Could it be that his own mother is hiding a monstrous secret?As Logan begins to dig deeper, to poke and prod at the truth, he realizes that his family may be keeping secrets that are darker than he ever imagined. Each time he angers his mom, he sees more and more of the monster inside her. And the closer he gets to the truth, the more dangerous the secret seems to be...