The Mark of Athena is the explosive third part in Rick Riordan's number one series - Heroes of Olympus. One fatal prophecy seven brave demigods a ... Show synopsis The Mark of Athena is the explosive third part in Rick Riordan's number one series - Heroes of Olympus. One fatal prophecy seven brave demigods a quest to find - and close - the doors of death. Annabeth felt as if someone had draped a cold washcloth across her neck. She heard that whispering laughter again, as if the presence had followed her from the ship. She looked up at the Argo II. Its massive bronze hull glittered in the sunlight. Part of her wanted to kidnap Percy right now, get on board and get out of here while they still could. She couldn't shake the feeling that something was about to go terribly wrong. She couldn't risk losing Percy again. Rick Riordan Is The Mythmaster - The Greek Gods are alive and kicking - "A cracking read". (Sunday Express). "Explosive". (Big Issue). "Action-packed". (Telegraph). Rick Riordan is an award-winning mystery writer. He lives in San Antonio, Texas, with his wife and two sons. Percy Jackson and the Lightning Thief, Rick's first novel featuring the heroic young demigod, was the overall winner of the Red House Children's Book Award in 2006.