Taboo_1x04 -

The central narrative engine is Delaney’s need for gunpowder to trade with the indigenous people of Nootka Sound—a commodity currently blacklisted for him by the British Crown.

Tom Hollander is introduced as a brilliant, nitrous-oxide-addicted chemist hired to manufacture explosives. His presence provides a rare streak of dark levity as he analyzes animal excrement and urine to refine saltpeter. Taboo_1x04

The Countess is revealed to be "Carlsbad," the head of the American spy network in London. Despite her agents having just sent an assassin to gut James (whom he brutally kills and disembowels), they find themselves in a tense negotiation for Nootka. The central narrative engine is Delaney’s need for

The episode reaches a crescendo when a humiliated Thorne Geary challenges Delaney to a duel to the death at dawn, setting the stage for the second half of the season. Taboo Episode 4 Review – Eternal Damnation The Countess is revealed to be "Carlsbad," the

Delaney and Lorna Bow (who has now firmly aligned herself with James after being rescued from a Crown dungeon) attend a debauched ball hosted by Countess Musgrove.

In one of the series' most jarring sequences, James appears to engage in a psychic, ritualistic encounter with his half-sister, Zilpha. Critics often interpret this as a metaphor for the invasion and contested ownership of "territory"—paralleling the battle for Nootka Sound itself.

This episode leans heavily into the show's more controversial "taboo" elements: