The goddess Persephone has summoned Percy, Thalia and Nico to the Underworld in order to retrieve Hades' powerful sword before it falls into the wrong hands. Easier said than done in a world full of evil daimons, ghosts and ghouls. Not to mention Iapetos - brother of the powerful Titan lord, Kronos. This time the young demigods are really up against it - will Percy manage to return the sword before it's too late? From Goodreads.
This short story was not as good as Rick Riordan's other books but it was still good. A fun little read that is part of the Percy Jackson and the Olympians series.
This book qualifies for:
Goodreads 2013 Reading Challenge
Serious Readers 2013
2013 Sequel Reading Challenge
2013 Paranormal Reading Challenge (ghosts)