"Among the Enemy" is the sixth book in the "Shadow Children" series written by Margaret Peterson Haddix. The series is set in a dystopian society where families are only allowed to have two children due to overpopulation laws. The story follows a group of "shadow children" who are illegal third children and must hide their existence from the Population Police. In "Among the Enemy," the main character Luke Garner, a shadow child, finds himself caught in a dangerous situation when he is taken to the Population Police headquarters. There, he encounters a high-ranking officer who offers him a chance to join their ranks and spy on other shadow children. Luke must navigate the complex world of loyalty, betrayal, and survival as he tries to protect his friends and make difficult choices. The "Shadow Children" series is known for its suspenseful storytelling, exploration of ethical dilemmas, and themes of oppression and resistance. "Among the Enemy" continues to delve into these themes as Luke faces new challenges and discovers more about the oppressive society in which he lives.