The Last Olympian by Rick Riordan

All year, the half bloods have been preparing for a battle against the Titans. They knew that the odds of a victory were almost impossible. The great prophecy that had something to do with Percy was revealed. Can Percy, Annabeth, Grover, Thalia save Olympus and destroy the evil Titan Kronos? Read to find out! (Ana Maria Oliveira - 4B)