The Dark Secret is the fourth book in the popular Wings of Fire series by Tui T. Sutherland. This thrilling novel follows the story of a young dragon named Starflight, who is on a mission to uncover a dangerous secret that could threaten the entire dragon world. With its engaging plot, well-developed characters, and vivid descriptions, The Dark Secret is a must-read for fans of the series and anyone who loves a good adventure story. Available in paperback, this book is perfect for readers of all ages who are looking for an exciting and immersive reading experience.