Jack the Ripper may be fading into memory, but east London has found no peace. An investigation into the assault of a policeman leads DI Reid and the men of H-Division to the newly-emergent Chinatown, where Jackson discovers evidence of a new and devastatingly powerful opiate. Reid fears a new kind of hell is to be released onto his streets.

A young woman is found murdered at the London Hospital and the only clue to her identity is an unusual deformity. The hunt for her killer takes Reid and the team into the shadowy netherworld of the freakshows, where they must seek the help of Joseph Merrick, aka the Elephant Man. Reinforcements for H-Division arrive in the form of DC Albert Flight.

The abduction of a prominent member of the London County Council introduces Reid to Councilor Jane Cobden, the first woman appointed to the LCC - because it appears the kidnappers are radical supporters of Cobden's aims. Long Susan is taken by force to the gang's hideout, and she soon finds herself growing sympathetic to her captors' lives and aims.

A valuable symbol of the British Empire’s wealth shows up in the form of an uncut diamond. It is a jewel ‘freed’ from the diamond monopoly of De Graal by one Daniel Judge, Captain Jackson’s untrustworthy older brother. Reid and Flight find themselves being drawn to the plight of a local craftsman defrauded of his work and income by a scam that is set to return H Division to the malign influence of Detective Inspector Jedediah Shine.

Death and violence comes to Whitechapel once again. Some decayed and murdered bodies are discovered in a slum tenement, and the advanced stages of the police divisional boxing championship reveals the vengeful ferocity to be seen within the ranks of the police force.

A murder inquiry in a curiosity shop reveals a secret dungeon and signs of a captive girl.

Alex le Shayne, a mysterious clairvoyant is found dead at the local performance place. Jackson presumes poison has a part to play. As Reid is missing Drake steps in to investigate. Elsewhere Susan continues to care for Mathilda and plans to send her to Switzerland.

Ghosts of Whitechapel's past come alive, setting our heroes on a path of destruction.