Read The Mark of Athena PDF by Rick Riordan Online eBook - Published by Disney-Hyperion ISBN: 1423140605. Listen to The Mark of Athena (Heroes of Olympus, Book 3) AUDIOBOOK from Rick Riordan / Disney-Hyperion . SUMMARY : 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 Ja.. PDF The Mark of Athena (Heroes of Olympus, Book 3) epub, Disney-Hyperion Bestseller author Rick Riordan