This is the compelling story of William Marshal, widely regarded as the greatest knight of all time. Historian Thomas Asbridge journeys through Marshal's remarkable life, from medieval castles across Europe to Jerusalem, presenting an epic adventure reminiscent of the Knights of the Round Table. Over fifty years, this English soldier and statesman served powerful figures like Eleanor of Aquitaine and Richard the Lionheart. Marshal fought in numerous battles, navigated courtly schemes and exile, and played a key role in the Magna Carta, consistently demonstrating unwavering loyalty to his kings through triumph and hardship. At seventy years old, he ultimately saved England from a French invasion.