The House of Hades is the fourth book in The Heroes of Olympus series. It was released on October 8th, 2013. The book takes place after The Mark of Athena.
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.
The House of Hades was an amazing fourth instalment in the Heroes of Olympus series. With even more action, more devastating events and more evil, The House of Hades has me completely riveted and begging for more. This series is fantastic and The House of Hades was no exception – you just cannot stop reading. With characters who will become your best friends, witty dialogue and a heart-warming romance, The House of Hades will have you captured and needing more.