You can purchase the book through Amazon or find details on the official Rick Riordan website . The Tower of Nero | Riordan Wiki | Fandom
The Tower of Nero by Rick Riordan is the concluding installment in The Trials of Apollo series, following mortal-turned-god Apollo and his companion Meg McCaffrey in a final, high-stakes battle against the emperor Nero in New York City. As Apollo works with allies at Camp Half-Blood to destroy Nero’s doomsday device, they must confront the villain, defeat the ancient foe Python, and deal with the lasting personal impacts of their journey. The novel ultimately sees Apollo restored to his divine form, now with a newfound sense of empathy after his mortal experiences, while setting up future adventures for various characters in the Riordan universe. The Tower of Nero by Rick Riordan