Our Mutual Friend (written in the years 1864-65) is the last novel completed by Charles Dickens and is one of his most sophisticated works, combining psychological insight with social analysis. It centers on, "money, money, money, and what money can make of life" but is also about human values. In the opening chapters a body is found in the Thames and identified as John Harmon, a young man recently returned to London to receive his inheritance. Were he alive, his father's will would require him to marry Bella Wilfer, a beautiful, mercenary girl whom he had never met. Instead, the money passes to the working-class Boffins, and the effects spread into various corners of London society. Marcus Stone illustrated the Library Edition of Great Expectations for Chapman and Hall in 1862, and then went on to replace Phiz as the illustrator for Dickens's next monthly-number serial, Our Mutual Friend.