All five books in the Trials of Apollo series in a hardcover boxed set of heroic proportions. Favorite Greek and Roman demigods return in a five-book adventure quest with a fresh twist: they’re helping Apollo regain his immortal status. - 5 hardcovers in a specially designed slipcase - Rick Riordan is considered the "storyteller of the gods" because of his five #1 best-selling series based on mythology - A new take on Greek and Roman mythology from the point of view of a fallen god - Fast-paced, monster-filled quest adventures told with humor and heart - Brings back beloved demigod characters from the Percy Jackson and Heroes of Olympus series - Concludes the Percy Jackson saga - Introduces new demigods - Villains are based on Roman emperors - Features a diverse cast with people from all kinds of backgrounds and lifestyles - Perfect for middle schoolers but can be enjoyed by older readers, too