The House of Hades

The stakes have never been higher. If Percy Jackson and Annabeth fail in their quest, there will be hell on Earth. Literally.

Wandering the deadly realm of Tartarus, every step leads them further into danger. And if, by some miracle, they make it to the Doors of Death, a legion of bloodthirsty monsters will be waiting for them.

Meanwhile, Hazel and the crew of the Argo II have to stop a war or save their friends. Whichever road they take, one thing is certain — in the Underworld, evil is inescapable.