Trials of Apollo Series - 5 Books Collection Set by Rick Riordan (Includes: The Hidden Oracle, The Dark Prophecy, The Burning Maze, The Tyrant's Tomb, The Tower of Nero) Join Apollo, the Greek god cast down to Earth as a mortal teenager, on a thrilling adventure in Rick Riordan's Trials of Apollo series. Filled with magic, humor, danger, and Greek mythology, these books are perfect for middle-grade and young adult readers. This 5-book collection includes: The Hidden Oracle The Dark Prophecy The Burning Maze The Tyrant's Tomb The Tower of Nero Perfect for fans of Percy Jackson and mythology-based adventures, this complete set delivers action, friendship, and laughter in every chapter.