Their rivalry is unparalleled in English history. This dual biography of these regal cousins is the story of sex, power, and politics. Plain, brilliant Elizabeth used her celibacy as a political tool; sensual and ruthless, Mary plotted thedeath of her cousin – and was put to death for treason. A fascinating exploration of their symbiotic relationship and the power struggle that raged between them. "Brilliant, wonderfully researched assessment... read here in buttery British tones by Isla Blair."—BookPage