The year is 1910. Sigmund Freud and his heir-apparent, Carl Jung, are changing the way we think about human nature and the mind. Twenty-two year old Toni Wolff enters the heart of this world as Jung's patient. His wife, Emma Jung, is twenty-six, a mother of four, aspiring to help her husband create the new science of psychology. Toni Wolff's fiercely curious mind, and her devotion to Jung, threaten this aspiration. Despite their passionate rivalry for Jung's mind and heart, the two women often find themselves allied. Born of aristocratic Swiss families, they are denied a university education,...