St Giles, London, 1829: three people have been brutally murdered and the city simmers with anger and political unrest. Pyke, sometime Bow Street Runner, sometime crook, finds himself accidentally embroiled in the murder investigation but quickly realises that he has stumbled into something more sinister and far-reaching.

In his pursuit of the murderer, Pyke ruffles the feathers of some powerful people and, falsely accused of murder himself, he soon faces a death sentence and the gallows. Imprisoned, and with only his uncle and the headstrong, aristocratic daughter of his greatest enemy to help, Pyke must engineer his escape, find the real killer and untangle the web of intrigue that has been spun around him.