As the battle for royal supremacy raged between the houses of Lancaster and York, Margaret Beaufort, who was descended from Edward III and proved to be a critical threat to the Yorkist cause, was forced to give up her son - she would be separated from him for fourteen years. Surrounded by conspiracies in the enemy Yorkist court, Margaret remained steadfast, only just escaping the headman's axe as she plotted to overthrow Richard III and secure her son the throne. Against all odds, in 1485 Henry Tudor was victorious on the battlefield at Bosworth. Margaret's unceasing efforts and royal blood saw her son crowned King Henry VII, and Margaret became the most powerful woman in England. Nicola Tallis unmasks the many myths that have attached themselves to Margaret and reveals the real woman: an independent and vibrant character, who would risk everything to become Queen in all but name.