What Maisie Knew is a novel by Henry James, first published as a serial in The Chap-Book and (revised and abridged) in the New Review in 1897 and then as a book later that year.

It tells the story of the sensitive daughter of divorced, irresponsible parents. The book follows the title character from earliest childhood to precocious maturity.

When Beale and Ida Farange are divorced, the court decrees that their only child, the very young Maisie, will shuttle back and forth between them, spending six months of the year with each. The parents are immoral and frivolous, and they use Maisie to intensify their hatred of each other. 

What Maisie Knew has attained a fairly strong critical position in the Jamesian canon. Edmund Wilson was one of many critics who admired both the book's technical proficiency and its judgment of a negligent and damaged society.

Total Running Time (TRT): 8h, 50 min

Henry James, OM (Order of Merit) (1843-1916) was an American-born writer, regarded as one of the key figures of 19th-century literary realism.

He is best known for a number of novels showing Americans encountering Europe and Europeans. His method of writing from a character's point of view allowed him to explore issues related to consciousness and perception, and his style in later works has been compared to impressionist painting. His imaginative use of point of view, interior monologue and unreliable narrators brought a new depth to narrative fiction.

Henry James was nominated for the Nobel Prize in Literature in 1911, 1912, and 1916.