Book excerpt: The Doctor, Amy and Rory travel back to Ancient Greece and encounter the Doctor's greatest hero: Socrates! But Athens faces deadly danger--creatures from myth stalk the streets, and the wrath of the gods may destroy mankind! The action continues in modern-day London and the spaceport called Cornucopia as the time-travellers encounter a sinister artist with a lethal name, a society of vicious alien criminals and the greatest thief in the galaxy!--Provided by publisher.