For years, a field near Standish in Gloucestershire has yielded Roman brooches, mosaic tiles and coins. The finds point to a sizeable villa somewhere nearby - but so far none has been found. Tony Robinson and the team have just three days to solve the mystery. There are plenty of signs that people lived in the area from the Iron Age through to the Roman period, but no sign of the villa. But clue by clue the archaeologists piece together the puzzle to reveal an extraordinary picture of several generations of one family living through huge social change and gradually improving their lifestyle as Romanised Britain became more and more prosperous.