Fifteen-year-old Charlie Simpson is a ticking time bomb. If somebody doesn’t stop him, he is going to explode. Fellow student Sam Caffey has never met Charlie, but he’s been watching him. He knows that Charlie is dangerous, and he knows that if he doesn’t act fast, people are going to die.
But the more Sam learns about the enigmatic Charlie, the more he begins to question his own sanity. He wants to stop Charlie. He wants to tell somebody that Charlie has killed and is going to kill again. But he can’t. Something in his head won’t let him. Is Charlie controlling Sam’s thoughts? Or is Sam losing his mind?
Sam has seen Charlie kill, but nothing can prepare him for what Charlie is about to do next. Charlie wants revenge. He wants to kill everybody who has ever wronged him. Can Sam stop Charlie? Or will he be forced to join him?