Horrible Histories: Groovy Greeks / Percy Jackson and the Sword of Hades

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. Flip the book over for lots more ancient Greek fun with Terry Deary's 'Groovy Greeks' - it's history with the nasty bits left in!" It's a short story included in "Percy Jackson The Demigod Files" . It has no US official cover art but the one of the collection book.

by Rick Riordan, Terry Deary

Scholastic · First published 2009 · 151 pages