The Time-Travelling Cat and the Roman Eagle

Topher Hope is on the move again. When his devoted cat, Ka, leaves a mysterious clue on his computer, a Roman word--CA;;LLevA--he follows her to a Romano-British settlement in AD 79. Ka is happy among the cat-adoring conquerors and their central heating! Topher, now a British boy apprenticed to a Roman mosaic maker, has mixed loyalties. When the eagle, symbol of Roman power, disappears from the forum, the fragile peace is threatened and Topher begins a desperate search. Can he find it and save his Roman friend, Marcus, from the Druid's murderous sickle?