Key Selling Points In this fourth installment of the Billy Stuart series, Billy and the Zintrepids explore an island where everything is massive: the plants, the animals and the monsters. They find another clue to continue their search for Billy’s grandfather but must overcome some hurdles before they can follow in his footsteps. Similar in format and style to the Geronimo Stilton series, these books are partially illustrated and have words called out in different fonts and colors. This book is a great hybrid between early chapter books and graphic novels. Over 200,000 copies of the original French version have ...