At the conclusion of The Mark of Athena, Annabeth and Percy tumble into a pit leading straight to the Underworld. The other five demigods have to put aside their grief and follow Percy's instructions to find the mortal side of the Doors of Death. If they can fight their way through the Gaea's forces, and Percy and Annabeth can survive the House of Hades, then the Seven will be able to seal the Doors both sides and prevent the giants from raising Gaea. But, Leo wonders, if the Doors are sealed, how will Percy and Annabeth be able to escape?
They have no choice. If the demigods don't succeed, Gaea's armies will never die. They have no time. In about a month, the Romans will march on Camp Half-Blood. The stakes are higher than ever in this adventure that dives into the depths of Tartarus.
Rick Riordan is the author of the #1 New York Times bestselling Percy Jackson and the Olympians series and The Heroes of Olympus Series for children and the multi-award-winning Tres Navarre mystery series for adults.
For fifteen years, Rick taught English and history at public and private middle schools in the San Francisco Bay Area and in Texas. In 2002, Saint Mary’s Hall honored him with the school’s first Master Teacher Award.
His adult fiction has won the top three national awards in the mystery genre – the Edgar, the Anthony and the Shamus.
His first Percy Jackson book The Lightning Thief was a New York Times Notable Book for 2005. The Sea of Monsters was a Child Magazine Best Book for Children for 2006 and a national bestseller. The third title, The Titan’s Curse, made the series a #1 New York Times bestseller, and the fourth title, The Battle of the Labyrinth, had a first printing of one million copies. The series concluded with The Last Olympian, which was also a major national bestseller.
Rick Riordan now writes full-time. He lives in Boston with his wife and two sons.
The Heroes of Olympus, Book Four: The House of Hades by Rick Riordan