So Apollo was stripped of his divine powers, forced to undergo a deadly quest at Camp Half-Blood, and left alone to his fate—but his trials weren't over yet! To return to Olympus, Lester Papadopoulos (that is, the incomparable Apollo, of course!) must go in search of the next oracle, which will not only determine his fate, but also affect the lives of his close friends. However, to get to him, the former god will have to face his fears and face old enemies who want to kill him more than anything else. What lengths are Apollo and his friends willing to go to in order to fulfill their mission? Rick Riordan is the author of world best-selling books for teenagers, the best contemporary writer in children's literature, according to the authoritative publication The New York Times.