This series follows the exciting adventures of a bright and resourceful young protagonist who, alongside her friends, dives headfirst into solving intriguing mysteries. Each installment challenges them to hone their unique skills, from sharp detective work to clever invention, as they uncover secrets hidden in plain sight. The narratives are packed with suspense, humor, and unexpected twists that will keep readers eagerly turning the pages. It's an ideal choice for young audiences who relish a good puzzle and thrilling escapades.
Eleven-year-old Caroline finds some letters belonging to the mystery man on the fifth floor that seem to show he's about to commit a terrible crime--and she and her brother are the targets! 5 1/8 x 7 5/8. 5/8.