Sleuth Squad

When glowing seashells begin to sing across Harbor Glen, Zoe and her friends uncover a hidden message carried through the tides—one powerful enough to change the world. With storms rising and the ocean’s rhythm faltering, the Sleuth Squad must decode a mysterious lighthouse signal that leads them to a forgotten underwater city. A suspenseful STEM mystery filled with teamwork, ocean science, emotional intelligence, and adventure for ages 9–13.