William, the nineteen-year-old duke of Normandy, is enjoying the full fruits of his station. Life is a succession of hunts, feasts, and revels, with little attention paid to the welfare of his vassals. Tired of the young duke’s dissolute behaviour and ashamed of his illegitimate birth, a group of traitorous barons force their way into his castle. While William survives their assassination attempt, his days of leisure are over. He’ll need help from the king of France to secure his dukedom from the rebels. On the other side of the English Channel lives ten-year-old Ælfgifa, the malformed and unwanted youngest sister to the Anglo-Saxon Jarl, Harold Godwinson. Ælfgifa discovers powerful rivalries in the heart of the state when her sister Ealdgyth is given in a political marriage to King Edward, and she finds herself caught up in intrigues and political manoeuvring as powerful men vie for influence. Her path will collide with William’s, and both must fight to shape the future. An Argument of Blood is the first of two sweeping historical novels on the life and battles of William the Conqueror.

TWO POWERFUL RIVALS—ONE DECISIVE BATTLE Now a political hostage in Falaise, Aelfgifa forms an unlikely friendship with William, Duke of Normandy. William has been swift to recognize her skills and exploit them to his advantage. However, unbeknownst to the duke, Gifa is acting as a spy for her brother, Harold Godwinson, a possible rival for the English throne currently in the failing grip of Edward the Confessor. Homesick and alienated by the Norman court, Gifa is torn between the Duke's trust and the duty she owes her family. William has subdued his dissenting nobles, and a united Normandy is within his grasp. But the tides of power and influence are rarely still. As William's stature grows, the circle of those he can trust shrinks. Beyond the English Channel, William has received news of Edward's astonishing decree regarding the succession. Aelfgifa returns to an England where an undercurrent of discontent bubbles beneath the surface. An England that may soon erupt in conflict as one king dies and another is chosen. The ambitions of two powerful men will decide the fates of rival cultures in a single battle at Hastings that will change England, Europe, and the world in this compelling conclusion to the Oath & Crown series on the life and battles of William the Conqueror.