
Title: The House of Hades (The Heroes of Olympus #4)
Author: Rick Riordan
Series: Yes
Finished or ARC: Finished
Source: Bought from Amazon.com
Goodreads: 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...