Book excerpt: Oliver has helicopter parents—they love him, but they seriously cramp his style. He decides to fill an old wooden box with souvenirs from some of his outrageous and daring exploits. That way, he'll never forget the zombies, the killer dogs and the crazy cows, and his parents will never know that he once jumped from a bridge with the police in hot pursuit. But the biggest shock comes when Oliver realizes that the most terrifying things of all can't be controlled or contained.