The Dark Prophecy, the second installment in the Trials of Apollo series by Rick Riordan, follows the story of Apollo, who has been transformed into a mortal teenager named Lester Papadopoulos. After the events of the first book, Apollo, along with his friends, embarks on a quest to rescue the Oracle of Trophonius, which is crucial for defeating the dark forces threatening the world. Throughout their journey, they encounter numerous challenges that test their...