Both Edward's father, John Chester, and Emma's uncle, the Catholic Geoffrey Haredale – these two are sworn enemies – oppose their union after Sir John untruthfully convinces Geoffrey that Edward's intentions are dishonourable. Sir John intends to marry Edward to a woman with a rich inheritance, to support John's expensive lifestyle and to pay off his debtors. Edward quarrels with his father and leaves home for the West Indies. Barnaby Rudge, a simpleton,wanders in and out of the story with his pet raven, Grip. Barnaby's mother begins to receive visits from the ill-kempt stranger, whom she feels compelled to protect. She later gives up the annuity she had been receiving from Geoffrey Haredale and, without explanation, takes Barnaby and leaves the city hoping to escape the unwanted visitor. When Barnaby and his mother arrive at Westminster Bridge they see an unruly crowd heading for a meeting on the Surrey side of the river. Barnaby is duped into joining them, despite his mother's pleas. The rioters then march on Parliament, and burn several Catholic churches and the homes of Catholic families. A detachment led by Hugh and Dennis head for Chigwell, intent on exacting revenge on Geoffrey Haredale, leaving Barnaby to guard The Boot, the tavern they use as their headquarters. The mob loots the Maypole on their way to the Warren, which they burn to the ground. Emma Haredale and Dolly Varden (now Emma's companion) are taken captive by the rioters. Barnaby is taken prisoner by soldiers and held in Newgate, which the mob plans to storm. The one-armed man turns out to be Joe Willet, who has returned from fighting against the American revolutionaries. Joe and Edward Chester turn out to be the rescuers of Gabriel Varden. The pair then rescue Dolly and Emma.