Navani Kholin, a schol­ar and leader, opens the chap­ter by advo­cat­ing for trans­paren­cy among the coali­tion of mon­archs, urg­ing Thayle­nah to share their secret fab­r­i­al tech­niques for the greater good. Her plea under­scores the esca­lat­ing dan­gers their world faces and the need for col­lec­tive knowl­edge. Mean­while, Navani and her team, includ­ing the ardent Rushu, study a crys­talline pil­lar in Urithiru, focus­ing on four gar­nets that resem­ble the sup­pres­sion fabrial’s design. Despite ini­tial excite­ment, their research hits a dead end, leav­ing Navani frus­trat­ed but deter­mined to uncov­er the pillar’s secrets.

Rushu reveals a trou­bling dis­cov­ery: the spren pow­er­ing the sup­pres­sion fab­r­i­al in Shades­mar is cor­rupt­ed, akin to Renarin’s enig­mat­ic spren, Glys. This rais­es con­cerns about the spren’s loy­al­ty and whether it will­ing­ly aids the ene­my. Navani argues that spren, like humans, have indi­vid­ual alle­giances, though she pri­vate­ly ques­tions Glys’s nature. The dis­cus­sion high­lights the eth­i­cal dilem­ma of impris­on­ing sapi­ent spren for fab­ri­als, a prac­tice con­demned by an anony­mous span­reed mes­sage accus­ing Navani of mon­strous behav­ior. Navani pon­ders whether ancient fab­ri­als, like the Oath­gates, treat­ed spren more humane­ly.

Navani redi­rects her team’s efforts toward acti­vat­ing the gar­net clus­ter in the pil­lar, the­o­riz­ing it once pro­tect­ed Urithiru from the Fused. She also tasks Rushu with reset­ting the sup­pres­sion fab­r­i­al to reverse its effects, poten­tial­ly dis­abling the Fused’s pow­ers. As she con­tem­plates the tower’s vul­ner­a­bil­i­ties, Navani grows uneasy about the pos­si­bil­i­ty of Masked Ones—Fused with Light­weav­ing abilities—infiltrating Urithiru unde­tect­ed. She orders Rushu to assem­ble a team to devise pro­to­cols for iden­ti­fy­ing hid­den ene­mies, empha­siz­ing the need for vig­i­lance against the Fused’s unpre­dictable capa­bil­i­ties.

The chap­ter clos­es with Navani enter­ing an ancient library room, once filled with Radi­ant mes­sages encod­ed in gem­stones. This space, now repur­posed for ongo­ing research, sym­bol­izes her relent­less pur­suit of knowl­edge amid mount­ing threats. Her reflec­tions on the tower’s defens­es, the ethics of fab­r­i­al cre­ation, and the enemy’s cun­ning strate­gies under­score the chapter’s themes of inno­va­tion, trust, and sur­vival in a world tee­ter­ing on the brink of chaos.