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 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.
- New eBook additions
- Plan Your Next Trip
- Game On!
- Available now
- Try something different
- Most popular
- New teen additions
- New kids additions
- See all ebooks collections
- Read by the Author
- Most popular
- For True Crime Enthusiasts
- New audiobook additions
- New kids additions
- New teen additions
- Available now
- Listenable History
- Try something different
- Audiobooks for the Whole Family
- Great Voices, Great Stories: Narrators to Love
- See all audiobooks collections