The 39 Clues Series 1-10 Books Box Set by Rick Riordan is a collection of fiction novels aimed at young adults aged 9-12. Published by Scholastic in English, this set includes 10 paperback books from the series. The books fall under various genres such as action, crime & thriller, adventure, horror, magic, war & combat, and fantasy. With a special attribute of being a collection, this box set is perfect for fans of Rick Riordan and those who enjoy captivating storytelling in the young adult genre.