Heroes of Olympus : The House of Hades (পেপারব্যাক)

Summary of the Book
Annabeth and Percy Jackson have fallen into a pit leading them straight to Tartarus, the centre of Hades’ power. Now, they must wait while their friends come to rescue them and close the Doors of Death. However, the Roman Demigods are attacking Camp Half-Blood, and there is no time to waste. If the demigods don’t stop them in time, all hell will break loose.

About Rick Riordan
 Rick Riordan is an American writer. He is best known for his series Tres Navarre and Percy Jackson and the Olympians.<br> Riordan graduated from the University of Texas. The Percy Jackson series was adapted into two films of a supposedly planned trilogy. The films starred Logan Lerman as the titular character.