A thrilling adventure story set in the world of gladiators and charioteers, emperors and legionaries: ancient Rome.    Josh and Maisie are two adventure-loving children who discover a mysterious, small door at the back of their Granddad's bookcase. On turning a key, the magic Time Key, they squeeze through—and find themselves in a whole new world, back in time.    Read about the children's amazing exploits as they help a heroic gladiator make his bid for freedom. But nobody could have expected the earth-shattering events that followed...   Not just an adventure story, this lavishly illustrated title, suitable for children aged 7-11, also has detailed factual information about life in Ancient Rome, the story of Rome, the Roman Empire, the Roman army, Roman engineering, Roman ships, gladiators, and a glossary of terms.    Created by Q-files.com, the great online illustrated encyclopedia: the comprehensive, in-depth, expert-verified educational resource for children aged 8-13.