One of the greatest battles of the late 16th century was the clash of two women who were cousins and rivals in power: Elizabeth I, Queen of England, and Mary, Queen of Scots. In a world ruled by men, they took center stage in a battle to the death over a prize only one could claim—the throne of England. Tudor and Renaissance scholar Carol Ann Lloyd-Stanger explores how their epic political and personal battles finally led to a unified rule in England.