James Delaney realises being a pariah businessman in Regency London with both the Crown and the East India Company as enemies is an unenviable fate. Having lost everything, he suffers a devastating betrayal, one that places all that he has left - his freedom - in jeopardy. Armed with the opportunity they have been waiting for, Delaney's enemies conspire to take him down for good. Meanwhile, Lorna Bow sets out to discover the truth, as Zilpha comes to realise she has perhaps already found her own.
Set in 1813, Taboo follows James Keziah Delaney who returns from Africa with 14 ill-gotten diamonds and seeking to avenge his father's death. 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.