O. Henry's stories frequently have surprise endings. In his day he was called the American answer to Guy de Maupassant. While both authors wrote plot twist endings, O. Henry's stories were considerably more playful, and are also known for their witty narration.
Most of O. Henry's stories are set in his own time, the early 20th century. Many take place in New York City and deal for the most part with ordinary people: policemen, waitresses, etc.
O. Henry's work is wide-ranging, and his characters can be found roaming the cattle-lands of Texas, exploring the art of the con-man, or investigating the tensions of class and wealth in turn-of-the-century New York. O. Henry had an inimitable hand for isolating some element of society and describing it with an incredible economy and grace of language. Some of his best and least-known work is contained in Cabbages and Kings, a series of stories each of which explores some individual aspect of life in a paralytically sleepy Central American town, while advancing some aspect of the larger plot and relating back one to another.
Cabbages and Kings was his first collection of stories, followed by The Four Million. The second collection opens with a reference to Ward McAllister's "assertion that there were only 'Four Hundred' people in New York City who were really worth noticing. But a wiser man has arisen—the census taker—and his larger estimate of human interest has been preferred in marking out the field of these little stories of the 'Four Million.'" To O. Henry, everyone in New York counted.
