Transferred to a famous asylum after being arrested for his wife's murder in fin-de-siècle Paris, a man with an eidetic memory is investigated by a doctor and a police officer who discover links between the bizarre crime and the highest and lowest establishments in France. Paris, 1899. Marcel Després is arrested for the murder of his wife and transferred to the famous Salpetriere Asylum. The doctor assigned to his case is fascinated by Marcel's inability to forget. And the policeman assigned to his case soon realizes that the crime involves something bigger and stranger than a lovers' fight, something with links to the highest and lowest establishments in France. Between them must unravel the mystery-- but the answers lie inside Marcel's head. And how can he tell what is significant when he remembers every detail of every moment of his entire life?