About the Book: In this exciting middle grade mystery, Meg Mizuno returns to Leland Chase Academy only to discover that her boarding school is on the brink of closure and a mysterious Mastermind has challenged her to another dangerous scavenger hunt. Forced to work alone to protect her friends’ deepest secrets, Meg must solve clever puzzles, uncover hidden clues, and race against time to save her school. Filled with suspense, friendship, adventure, and unexpected twists, this fast-paced novel is perfect for young readers who enjoy mystery and puzzle-solving stories.