Bleak House
From wikipedia:
Bleak House is the ninth novel by Charles Dickens, published in twenty monthly installments between March 1852 and September 1853. It is held to be one of Dickens’s finest novels, containing one of the most vast, complex and engaging arrays of minor characters and sub-plots in his entire canon. The story is told partly by the novel’s heroine, Esther Summerson, and partly by an omniscient narrator. Memorable characters include the menacing lawyer Tulkinghorn, the friendly, but depressive John Jarndyce, and the childish and disingenuous Harold Skimpole, as well as the likeable but imprudent Richard Carstone.
The chapters are helpfully numbered 1-67 and you can click the image for a better look of this, frankly massive dendrogram.