Harmon's death is the catalyst for everything else that happens in the novel. It seems the fortune was left to the young man on the condition that he marry a girl he'd never met, Bella Wilfer. His death, however, brings a new heir onto the scene, Nicodemus Boffin, the kind-hearted but low-born assistant to Harmon's father. Boffin and his wife adopt young Bella, who is determined to marry money, and also hire a mysterious young secretary, John Rokesmith, who takes an uncommon interest in their ward. Not content with just one plot, Dickens throws in a secondary love story featuring the riverman's daughter, Lizzie Hexam; a dissolute young upper-class lawyer, Eugene Wrayburn; and his rival, the headmaster Bradley Headstone. Dark as the novel is, Dickens is careful to leaven it with secondary characters who are as funny as they are menacing--blackmailing Silas Wegg and his accomplice Mr. Venus, the avaricious Lammles, and self-centered Charlie Hexam. Our Mutual Friend is one of Dickens's most satisfying novels, and a fitting denouement to his prolific career. --Alix Wilber