The Friendship Detective Investigates Social Boundaries is a richly illustrated picture book for children ages 4-9 that helps young readers understand personal space, social cues, and respectful friendship skills in a clear, engaging way. When Max runs to join a game and the other children step back, he begins to realize that friendship has clues worth noticing. With help from his Detective Notebook and guidance from Ms. Rivera, Max learns to understand the unspoken signals that shape positive social interactions. This story introduces children to the simple Watch, Ask, Wait strategy for navigating friendships with greater confidence, empathy, and awareness. Through relatable moments and concrete examples, children learn to recognize personal boundaries, read facial expressions and body language, and respond thoughtfully to others. Inside this book, children will learn how to: Understand the idea of a personal space bubble Notice when a smile changes or a friend steps back Recognize when someone needs space to work or play Listen to spoken and unspoken social cues Use the Watch, Ask, Wait method in everyday situations Practice new skills through interactive activities Especially helpful for young learners, including many neurodivergent children, who benefit from explicit instruction, this book offers a supportive introduction to social boundaries without shame or blame. It also includes a practice challenge and an Official Friendship Detective certificate to celebrate each child's growth. Warm, practical, and empowering, The Friendship Detective Investigates Social Boundaries helps children build healthier peer relationships, stronger emotional awareness, and greater social confidence at school, on the playground, and beyond.