The Last Tudor

Learn you to die' is the advice that Jane gives in a letter to her younger sister Katherine, who has no intention of dying. She intends to enjoy her beauty and her youth and find love. But her lineage makes her a threat to the insecure and infertile Queen Mary and, when Mary dies, to her sister Queen Elizabeth, who will never allow Katherine to marry and produce a potential royal heir before she does. So when Katherine's secret marriage is revealed by her pregnancy, she too must go to the Tower.