Jackson attempts to drink away his sorrow and Drake sleeps once again with Rose as Reid lies comatose in Obsidian's hospital. But Fred Abberline rouses them to solve the murder of a publican whose body is found stuffed inside a barrel. Their investigation leads them to a gang of coopers from the local Black Eagle brewery, who have been using intimidation tactics to ensure that local publicans continue to serve the brewery's beers rather than beer from outside of London. Meanwhile, Drake confronts Rose at the music hall, demanding that she tells her fiancée about their relationship.
Suspicion finally falls on the younger of two brewery brothers who are apprentices at the brewery. Jackson convinces the elder brother, who is dying of consumption, to talk his sibling out of killing PC Grace, whom the brewery gang have kidnapped.
Jackson sits in his surgery, contemplating all the horrors he has seen and faced as Mimi comforts him. In the hospital, Reid dreams of his past and of his daughter, and awakens. Long Susan greets him, asking "sir, who am I?"