Used book – A Dog Who's Afraid of Nothing!, Lucy Daniels

Julie and Jess are inseparable. Alas, the holidays are over, and it's time to go back to school. Since the beginning of the school year, Paul McLay, the Miles' little neighbor, has been looking worried. Why is he so sad? What is he hiding? One stormy evening, he disappears. Julie and her dog will do everything to find him...