Book excerpt: Two quests down, one to go! Then, hopefully, King Eurystheus will finally forgive Hercules and not declare war on Mount Olympus. Zeus nd Hercules have acquired the Amazon warrior queen's golden belt and the Hydra's scale. All that's left is to bring Cerberus, the three-headed guardian of the Underworld--gulp!--to King Eurystheus. Hopefully, Athena can get Hades to loan them Cerberus until the quest is completed. But when the trio arrives at the Underworld, they find a zombified Hades. Then the mysterious Melinoe steps out from the shadows with her skeleton ghost army known as Nightmares--double gulp! How do Zeus, Athena, and Hercules even fight an army of ghostly skeletons?