Most sixteen-year-olds have friends. Aden Stone has four human souls living inside him: One can time-travel. One can raise the dead. One can tell the future. And one can possess another human. With no other family and a life spent in and out of institutions, Aden and the souls have become friends. But now they're causing him all kinds of trouble. Like, he'll blink and suddenly he's a younger Aden, reliving the past. One wrong move, and he'll change the future. Or he'll walk past a total stranger and know how and when she's going to die. He's so over it. All he wants is peace. And then he meets a girl who quiets the voices. Well, as long as he's near her. Why? Mary Ann Gray is his total opposite. He's a loner; she has friends. He doesn't care what anyone thinks; she...