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 Gaea’s forces, and Percy and Annabeth can survive the House of Hades, then the Seven will be able to seal the Doors from 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.
This paperback edition will include a never-before-seen short story, “The Crown of Ptolemy,” in which Percy and Annabeth fight alongside Carter and Sadie Kane, and more bonus content!
Richard Russell Riordan Jr. (/ˈraɪərdən/; born June 5, 1964) is an American author. He is known for writing the Percy Jackson & the Olympians series, about a teenager named Percy Jackson who discovers he is a son of the Greek god Poseidon. Riordan’s books have been translated into forty-two languages and sold more than thirty million copies in the US. 20th Century Fox adapted the first two books of his Percy Jackson series as part of a series of films. His books have spawned related media, such as graphic novels and short story collections.
Riordan’s first full-length novel was Big Red Tequila, which became the first book in the Tres Navarre series. His big breakthrough was The Lightning Thief (2005), the first novel in the five-volume Percy Jackson and the Olympians series, which placed a group of modern-day adolescents in a Greco-Roman mythological setting. Since then, Riordan has written The Heroes of Olympus, a sequel to the Percy Jackson series; The Kane Chronicles (2010-2012), a trilogy of similar premise focusing on Egyptian mythology; and Magnus Chase and the Gods of Asgard (2015-2017), again a triology of similar premise focusing on Norse mythology. Riordan also helped Scholastic Press develop The 39 Clues series and its spinoffs, and penned its first book, The Maze of Bones (2008). His most recent publication is The Trials of Apollo series; the first book, The Hidden Oracle, was released in May 2016.