At the Lightweaver monastery, Szeth completes his circuit around thirty nearly identical illusions of Shush and realizes he cannot identify the "perfect" figure by sight alone. Syl secretly appears and offers help, reasoning through the puzzle with him while warning him not to mention her. Together they notice patterns in the figures' traits and first narrow the options to the version with the rarest combination of features, but both of them quickly suspect that answer is too obvious for a puzzle designed by Moss.

Szeth and Syl then reconsider the challenge from Moss's perspective. Szeth recalls that Moss said almost all the illusions were imperfect, but one was Moss hidden behind a perfect face, and that he was somewhere inside the circle of light. Remembering that Lightweaving is built on subterfuge, not true perfection, Szeth finally realizes that the only actually perfect image of Shush is the ancient stone mural on the floor beneath the illusions. He drops from above, drives his Blade into the mural's eye, breaks the deception, and reveals exhausted acolytes who had been standing behind the false images while Moss had hidden below the floor.

Szeth cuts into the stone, finds Moss's discarded clothing, and recovers the Blade Moss leaves behind after evaporating into darkness. Syl calls the strike impulsive, but Szeth answers that sometimes a person must simply make a decision. As Kaladin and Nin approach, Szeth recognizes that this lesson matters beyond the trial itself.

Elsewhere, Jasnah withdraws to the restored temple of Talenelat in Thaylen City so she can think through Odium's coming attack in silence. She tests several lines of reasoning, including vengeance, formal military logic, and economic incentives, and becomes increasingly frustrated because every explanation feels incomplete. Jasnah keeps returning to the same problem: Thaylen City is so difficult to take that committing major forces there makes little sense unless the enemy gains something more important elsewhere.

When Ivory questions why an atheist would choose a temple for reflection, Jasnah is prompted to think about faulty assumptions. She reviews her premises and suddenly identifies the most dangerous one: everyone has assumed the approaching fleet actually carries an invading army. Jasnah realizes the ships could instead be a slow-moving bluff, filled with visible decoys and costumes, meant to make the coalition overcommit troops and attention while the real strategic effort happens elsewhere. Acting on that insight, Jasnah decides the Windrunner scouts must get close enough to the fleet to learn whether the threat is genuine.