Britannia, 45 ad: Vespasian's brother, sabinus, is captured by druids. The druids want to offer a potent sacrifice to their gods - not just one Roman legate, but two. They know that Vespasian will come after his brother ...Britannia, 45 ad: Vespasian's brother, sabinus, is captured by druids. The druids want to offer a potent sacrifice to their gods - not just one Roman legate, but two. They know that Vespasian will come after his brother and they plan to sacrifice the siblings on mid-Summer's day.