Sword of Vengeance

After winning the Battle of Hastings, William the Conqueror sent his army to the north of England to make a fiercely ruinous invasion. The most formidable commander of the king, Count Durand, massacred a hundred thousand Saxons and ravaged their lands. Durand now rules the north with his sons Artus and Roman. The survivors live in constant fear. But a mysterious alien will soon lead their rebellion.