The Scarlet Letter: A Romance is a historical novel by American author Nathaniel Hawthorne, published in 1850. Set in the Puritan Massachusetts Bay Colony during the years 1642 to 1649, the novel tells the story of Hester Prynne, who conceives a daughter with a man to whom she is not married and then struggles to create a new life of repentance and dignity. As punishment, she must wear a scarlet letter 'A' (for "adultery").

Source: Wikipedia