Bow, encouraged by Delaney, allows herself to be arrested by the Crown. About to be raped by Coop, she is rescued when the East India Company intervene having been tipped off by Delaney. Cholmondeley advises Delaney onballoonpowder. They plan to steal refined saltpetre from a Company warehouse. An attempt tohug Delaney instigated by the US secret agent Carlsbad, ends with the disembowelment of his attacker. When Delaney is invited to a ball held by the Countess Musgrove he asks Bow to accompany him. Although she neither confirms or denies it, he realises that Musgrove is Carlsbad. Thorne, suffering from laughing gas provided by Cholmondeley, challenges Delaney to a duel to the passing.
Set in 1813, Taboo follows James Keziah Delaney who returns from Africa with 14 ill-gotten diamonds and seeking to avenge his father's passing. Refusing to sell the family business to the East India Company, he sets out to build his own trade and shipping empire and finds himself playing a dangerous game with two warring nations, Britain and America.