In this momentous final book in the "New York Times"-bestselling Percy Jackson and the Olympians series, the long-awaited prophecy surrounding Percy's 16th birthday unfolds. As the battle for Western civilization rages on the streets of Manhattan, Percy faces a terrifying suspicion that he...

In this momentous final book in the "New York Times"-bestselling Percy Jackson and the Olympians series, the long-awaited prophecy surrounding Percy's 16th birthday unfolds. As the battle for Western civilization rages on the streets of Manhattan, Percy faces a terrifying suspicion that he may be fighting against his own fate.