The Blood of Olympus

The Blood of Olympus is the fifth and final installment in The Heroes of Olympus series by Rick Riordan. The seven demigods of the Prophecy of Seven - Percy, Annabeth, Jason, Leo, Piper, Hazel, and Frank - have been through a lot. Now, they must face Gaia, the Earth Mother, who is about to wake and wreak havoc. The demigods must make sacrifices, face their worst fears, and make the hardest decisions of their lives in order to save the world.