Leo never thought school could be exciting—until he found a mysterious note hidden inside his desk. Each day, new challenges and secret messages appear, leading him on a thrilling adventure. Who is behind the notes? And why have they chosen him? As Leo unravels the mystery, he discovers a hidden world of puzzles, secrets, and an invitation to something much bigger than he ever imagined. But can he trust his best friend, Mia, with the truth?

A perfect read for young mystery lovers who enjoy adventure, puzzles, and a touch of suspense!