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. The stakes have never been higher. If Percy Jackson and Annabeth fail in their quest, therell be hell on Earth. Literally. Wandering the deadly realm of Tartarus. Bei strukljeva.net erhältlich: Heroes of Olympus 4. The House of Hades - Rick Riordan - Penguin Books Ltd (UK) - ISBN: Schnelle und.