Roman Britain in 91 AD is a raw frontier province, part of the mighty Empire ruled by Domitian Caesar. Though it is almost fifty years since the legions invaded, many native tribes still hate their conquerors and seize any chance to harass the Roman settlers who are flocking in to colonize the new province. Tension is especially high in the north, where Aurelia Marcella, a young innkeeper from Italy, runs the Oak Tree Inn on the road to York. A...