In The Son of Neptune, Percy, Hazel, and Frank met in Camp Jupiter, the Roman equivalent of Camp Halfblood, and traveled to the land beyond the gods to complete a dangerous quest. The third book in the Heroes of Olympus series will unite them with Jason, Piper, and Leo. But they number only six–who will complete the Prophecy of Seven? 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 be another unforgettable adventure by master storyteller Rick Riordan.

Author Biography

RICK RIORDAN is the author of the “New York Times "#1 best-selling Percy Jackson and the Olympians series: "The Lightning Thief,” “The Sea of Monsters,” “The Titan's Curse,” “The Battle of the Labyrinth,” and “The Last Olympia"n. His other novels for children include the "New York Times "#1 best-selling series The Kane Chronicles ("The Red Pyramid,” “The Throne of Fire,” and “The Serpent's Shadow”) and The Heroes of Olympus (“The Lost Hero,” “The Son of Neptune, The Mark of Athena, "and "The House of Hades”). He lives in Boston, Massachusetts with his wife and two sons. Learn more at www.rickriordan.com.