continue. “What is it?”
“We inspected the suppression fabrial in Shadesmar, as you asked,” Rushu said. “Your theory is correct, it manifests a spren in Shadesmar as Soulcasters do. But on this side, there is no sign of that spren in the gemstones.”
“What’s the problem, then?” Navani asked. “My theory is correct.”
“Brightness, the spren that runs the suppression device … has been corrupted, very similar to…”
“To Renarin’s spren,” Navani said.
“Indeed. The spren refused to talk to us, but didn’t seem as insensate as the ones in Soulcasters. This reinforces your theory that ancient fabrials—things like the pumps, the Oathgates, and the Soulcasters—somehow imprisoned their spren in the Cognitive Realm. When we pressed it, the spren closed its eyes pointedly. It seems to be working with the enemy deliberately, which raises questions about your nephew’s spren. Dare we trust it?”
“We have no reason to assume that one spren serving the enemy means all of its type do,” Navani said. “We should assume they each have individual loyalties, like humans.”
She had to admit, however, that Renarin’s spren made her uncomfortable. Seeing the future? Well, she had already tied her mind in knots thinking about Glys. Instead, she tried to focus on the nature of this fabrial’s spren.
You capture spren, the strange person had said to her via spanreed. You imprison them. Hundreds of them. You are a monster. You must stop.
Weeks had passed without a quiver from the spanreed. Was it possible this person knew how to create fabrials the old way, which appeared to use sapient spren, locking them in the Cognitive Realm? Perhaps this method was preferable and more humane. The magnificent spren that controlled the Oathgates didn’t seem to begrudge their attachment to the devices, for example, and were fully capable of interacting.
“For now, study this,” Navani said to Rushu, tapping her knuckles against the majestic gemstone pillar. “See if you can find a way to activate this specific group of garnets. In the past, the tower was protected from the Fused. Old writings agree on this fact. This part of the pillar must be why.”
“Yes…” Rushu said. “A fine theory, and a fine suggestion. If we focus on this one piece of the pillar, which we know is a distinct fabrial, maybe we can activate it.”
“Also try resetting the suppression fabrial we stole. It smothered Kaladin’s abilities, but let the Fused use their powers. There might be a way to reverse the device’s effects.”
Rushu nodded in her absentminded way. Navani continued to stare up at the pillar, which sparkled with the light of a thousand facets. What was she missing? Why couldn’t she activate it?
She handed the schematic to Rushu and began walking from the room. “We haven’t been giving enough thought to the tower’s security,” she said. “Clearly the ancients were worried about incursions by the Fused—and we experienced one already.”
“The Oathgates are under constant guard now,” Rushu said, hurrying to keep up. “And authentication by two different orders of Radiants is required for activation. It seems unlikely the enemy could do what they did before.”
“Yes, but what if they came in another way?” The spren she’d interviewed claimed that the Masked Ones—Fused with Lightweaving powers—couldn’t enter the tower. Its ancient protections had some lingering effects, like the changes in pressure or the warmth. Indeed, this seemed proven, as while Masked Ones sometimes slipped into human camps, they had never come to Urithiru.
At least so far as Navani could tell. Perhaps they’d just been very careful. “The enemy,” Navani said to Rushu, “has abilities we can only guess at—and the powers we do know about are dangerous enough. Masked Ones could be among us and we’d never know it. You or I could be one of them right now.”
“That … is a highly disturbing thought, Brightness,” Rushu said. “What could we possibly do? Other than fixing the tower’s defenses.”
“Gather a team of our best abstract thinkers. Assign them the task of creating protocols to identify hidden Fused.”
“Understood,” Rushu said. “Dali would be perfect for that. Oh, and Sebasinar, and…” She slowed, pulling out her notebook, oblivious to how she was standing in the middle of the corridor, forcing people to step around her.
Navani smiled fondly, but left Rushu to her task, instead turning right and entering one of the ancient “library” rooms. When first studying the tower, they’d found dozens of gemstones in this room, all encoded with short messages from the ancient Knights Radiant.
Over the months, the room had transformed from a dedicated study of those gemstones