The Age of Innocence centers on an upper-class couple's impending marriage, and the introduction of the bride's cousin, plagued by scandal, whose presence threatens their happiness. Though the novel questions the assumptions and morals of 1870s New York society, it never develops into an outright condemnation of the institution. The novel is noted for Wharton's attention to detail and its accurate portrayal of how the 19th-century East Coast American upper class lived, as well as for the social tragedy of its plot. Wharton was 58 years old at publication; she had lived in that world and had seen it change dramatically by the end of World War I. The book won the 1921 Pulitzer Prize for Fiction, making Wharton the first woman to win the prize. Source: Wikipedia