Heroes of Olympus 3: Mark of Athena

The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land to find the Doors of Death. What exactly are the Doors of Death? Much of the prophecy remains a mystery. . . . With old friends and new friends joining forces, a marvelous ship, fearsome foes, and an exotic setting, The Mark of Athena is another unforgettable adventure by master storyteller Rick Riordan. The accessible and dramatic cover art by graphic novelist Nilah Magruder will attract a new generation of fans.