Books author - "Maria Severini"

This is about a boy that turns into a killer. He doesn't know what to do but theirs a girl named Emily and she is a guider for Jake! She helps Jake out through his life and tries to find out if he's a good killer or bad! What he doesn't know that he has to train himself to be able to stay in control of his killer side. The main problem is that he doesn't know-how. And Emily is there to help him have control of that side of him. But there is going really hard because he goes back in forth with