Tony and the Team get a unique opportunity to dig at an army firing range at High Ham in Somerset and investigate a series of mosaics first discovered 150 years ago. Everything indicates a Roman villa, though perhaps not on such a grand scale. The inhabitants may have been Romanised Britons, living from the 2nd to the early 5th century. Matt volunteers as a slave for the day. When the cold east wind sets in, Phil and the other diggers temporarily "down tools". They are joined by Martin Brown from the Defence Estates and Roman finds specialist Philippa Walton.