Author - Deborah Levy
Publisher -Disney-Hyperion
Edition - 2015
Binding - Paperback
Language - English 
Pages - 720
Condition( Use  Good Condition )

At the conclusion of , 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,

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