In 1905 a nineteen-year-old girl is admitted into a psychiatric hospital in Zurich where she has arrived from Russia in a desperate condition. The girl is suffering from a severe form of hysteria and refuses to eat. A young doctor, Carl Gustav Jung, takes her under his care and, for the first time ever, experiments with the psychoanalytical method of his teacher, Sigmund Freud. Jung also begins an affair with his patient and thus is born a sweeping story of love and passion. Sabina Spielrein eventually becomes a psychoanalyst herself, founding the famous White School, and dies in 1942, a victim of Nazi violence. The investigation of this dramatised story is taken up by Marie, a young French scholar, and Fraser, a historian from Glasgow, as they follow Sabina’s life from Zurich to Moscow to Rostow, leading to the discovery in 1977 of missing portions of the original correspondence in the form of letters between Jung, Freud and Spielrein.