Chapter 19

Hellet reflects on generosity and power, framing how those climbing from poverty fear losses most. Celcha reports her failed appeal to H’seen and the gas house workers, who refuse open rebellion. Weeks pass as library life seduces Celcha and Hellet grows quiet, studying and preparing in secret.

On a night of their shifted “day of ease,” Hellet wakes Celcha to act. He leads her off the sanctioned path into a vast cavern, down a scorched chasm where he has been smelting cinnabar from Arthran into quicksilver. He admits borrowing and taking money—largely from Lutna—to fund glassware and fuel, and that the toxic work may have harmed him.

Burdened with sacks of quicksilver, they descend carved steps from an older city beneath Krath. Hellet, informed by Yute and his reading, explains the long human–canith history and the limits on Assistants. At a corroded round hatch he has partially excavated, they pry it free; pressurized methalayne blasts out, flooding the chasm.

Hellet reveals the plan: quicksilver will catalyze methalayne into a nonflammable gas that induces sleep. When the gas house connects a new cylinder, flames citywide will fail and the sedative will fill homes from tenements to palaces. The ganar, uniquely immune, will awaken with their masters helpless—finally granted a choice over what to do.

Crawling through narrow tunnels toward the intake, Celcha wrestles with the morality and danger while the gas heightens her stamina and uncanny sight. Hellet notes that Maybe and Starve meant to guide them but are absent, leaving the siblings to find the gas house’s “breath” and feed it the catalyst on their own.