Get ready for a thrilling adventure with The Hardy Boys Secret Files #4, Hopping Mad by Franklin W. Dixon. This paperback novel is perfect for children and young adults who love mystery and detective stories. The book is illustrated and written in English, with a publication year of 2010 by Simon & Schuster.

The narrative type is fiction and the intended audience are children aged 4-12. The book is a first edition and not vintage, with no personalization or inscriptions. It is a great addition to any book collection and perfect for readers who enjoy the genre of children and young adult literature.