The Tower of Nero (The Trials of Apollo, Book 5)

In 'The Tower of Nero,' the fifth and final book in 'The Trials of Apollo' series by Rick Riordan, the former god Apollo, now a mortal teenager named Lester Papadopoulos, faces his last and greatest challenge. He must confront the evil Roman Emperor Nero, who plans to take over the world and destroy the demigods' haven, Camp Half-Blood. Accompanied by his friends, including the demigod Meg McCaffrey, Apollo embarks on a perilous journey to New York City, where Nero's powerful and magical headquarters, the Tower of Nero, is located. Along the way, Apollo continues to learn what it means to be human and grapples with his past mistakes. The climax of the story sees Apollo confronting Nero and ultimately triumphing through a combination of bravery, cleverness, and the support of his friends. The victory comes with sacrifices, and Apollo must navigate the complexities of reconciliation and forgiveness, both with others and himself. By the end, Apollo has grown significantly and is given the chance to become a god again, but with a deeper understanding and appreciation of humanity.