Our Mutual Friend is Charles Dickens' last completed novel, originally serialized in 1864-5. It's complex plot centres on a legacy left to John Harmon, on condition that he marry Bella Wilfer, a woman, he has never met.
Free online texts
Gutenberg: Our Mutual Friend. EPUB, HTML, MOBI and TXT formats.
Internet Archive: Our Mutual Friend, with introduction by G.K. Chesterton.. EPUB, MOBI, TXT and PDf formats.
University of Adelaide (Internet Archive): Our Mutual Friend. EPUB, HTML and MOBI formats.
Wikisource: Our Mutual Friend. HTML and other formats.
Librivox: Our Mutual Friend - Public domain audiobooks.
Orwell Foundation: Charles Dickens, by George Orwell. A valuable critical essay.
Wikipedia: Charles Dickens - Our Mutual Friend
The Great Conversation: Further reading at Tom's Learning Notes
Bloom's Western Canon: Our Mutual Friend is included.