House of Hades Summary

"House of Hades" is a book from the Lost Hero Series. It is written by Rick Riordan. This book has many main characters. It switches chapter by chapter. Some of the main characters are Percy, Jason, Annabeth, and Leo. In the book, Percy and Annabeth fall into Tartarus.  For those who do not know, Tartarus is the deepest pit in hell. It is almost impossible to get out. The last 5 members of the quest must save them. They must first find the house of hades to open the gates of the underworld. You have to read the rest of the book to learn more.