Corvin talked for a long time.
He talked about the Hollow Born the way a man talks about something he has studied for years but never expected to sit across from. Carefully at first, then with growing precision as he found his footing, the lecturer's rhythm returning naturally, words placed where they were meant to go. Cael listened without interrupting, which was not something he did often and which cost him more effort than it appeared to.
The Hollow Born were not a bloodline. They were not a clan or a family or a chosen people in the religious sense the Church used that phrase. They were accidents of cosmology, individuals in whom the boundary between the mortal Thread and the Hollow was simply thinner than it was in everyone else. Some were born this way because their parents had been exposed to significant Hollow energy during conception. Some were born this way for reasons Aldric's research had never satisfactorily explained. A few appeared to be born this way deliberately, as though something on the other side of the Veil had reached through and made an adjustment.
That last category was the smallest and the most dangerous.
"Aldric called them Hollow Seeded," Corvin said. He had been nursing the same ale for an hour and it had gone entirely flat. "The distinction matters. A naturally occurring Hollow Born develops their abilities gradually and instinctively, the way a child learns to walk. A Hollow Seeded individual is different. The Hollow energy in them is not a thin boundary or a natural occurrence. It is intentional. Placed." He looked at Cael steadily. "Whatever is imprisoned in the Hollow placed it. Reaching through the Veil is not easy even for an entity of that magnitude. It requires enormous energy and enormous precision. Which means when it does it, it does it for a reason."
It has been waiting, Fenne said. The Hollow knows your name.
"How many Hollow Seeded have there been," Cael said. It was not quite a question.
"In all of recorded pre-Church history, Aldric found evidence of four." Corvin set his flat ale down. "All four died violently. Two were killed by the Church before the Church was even called the Church, back when it was still a loose collection of Thread suppressionists who believed the Hollow was the source of all corruption in the world. One died in circumstances Aldric could not fully reconstruct. The fourth." He paused. "The fourth is believed to have walked into the Hollow voluntarily and never returned. Approximately six hundred years ago."
"And now there is a fifth," Cael said.
"And now there is a fifth," Corvin agreed quietly.
The common room had thinned considerably. The dockworkers were gone, the arguing couple had either reconciled or exhausted themselves into silence upstairs, and the merchant in the corner had fallen asleep over his drink with the boneless commitment of someone who had made a full evening of it. The woman near the fire was watching Cael and Corvin with the alert stillness of someone who was not actually watching them at all, which was a distinction Cael had learned to make at age nine.
He filed it away and returned his attention to Corvin.
"The extraction process," Cael said. "What does it actually do to the person it is being extracted from."
Corvin was quiet for a moment in the way that meant the answer was not good.
"In the short term, very little that is noticeable. Mild fatigue following intensive operations. Slightly slower Thread recovery after heavy use. Things an active field operative would attribute to the work itself rather than to an external cause." He turned his repaired spectacles on the table briefly, a nervous gesture he did not seem aware of. "In the long term, it was intended to create a ceiling. A Hollow Born individual being gradually harvested would find their abilities plateauing, never quite reaching the stages they should theoretically be capable of. The Order would have attributed this to natural limits. The operative would have had no reason to question it."
I plateaued at Stage Two three years ago. My handlers told me I had reached my natural ceiling. Commended me for excellent work at that level. Adjusted my mission profile accordingly.
Something shifted in Cael's chest that was not quite anger and not quite grief but lived in the neighborhood of both.
"But I am still at Stage Two," Cael said. "If the harvesting created an artificial ceiling, and the harvesting has now stopped because I am no longer in the Order's operational network." He thought it through as he said it. "How long before the ceiling lifts."
Corvin blinked. Then a slow, careful expression crossed his face that Cael recognized after a moment as the look of a scholar watching theory become practice in real time.
"Aldric's models suggested the recovery would not be gradual," Corvin said. "The harvesting does not permanently damage the capacity. It suppresses it. Like a weight held against a door. Remove the weight and the door does not open slowly." He picked up his flat ale, appeared to remember what it was, and set it back down. "We do not actually know how quickly it would progress in a Hollow Seeded individual specifically. The models were built on naturally occurring Hollow Born data. For someone of your particular origin the progression could be considerably more rapid."
Remove the weight and the door does not open slowly.
Cael thought about the Thread diagram in the journal. The extended geometry. The stages the Order had cut short and called a complete system. He thought about fifteen years of missions run at a capacity that was not his actual capacity, fifteen years of being precisely useful and nothing more, fifteen years of a ceiling he had accepted without question because he had been given no reason to question it.
He thought about Fenne's voice in the candlelit room. About what runs in you.
"The seven stages," Cael said. "Walk me through them. All of them."
Corvin nodded slowly and began.
Cael already knew Stages One through Five from the Order's curriculum, though he understood now that the Order's versions were abbreviated and in some cases deliberately misdescribed. Hollow Sight was accurate as taught. Thread Cutting was accurate. Veil Step was accurate in mechanism but the Order had described it as stepping through a gap in physical space rather than what it actually was, which according to Corvin was a brief and partial merging with the Hollow itself, controlled and temporary, the practitioner touching that dark plane and using the contact to move through it.
I have been partially entering the Hollow every time I used Veil Step. I have been doing this since I was fourteen. Nobody told me.
Resonance was also accurate as taught. Stage Five, the Unraveling as the Order called it, was where the descriptions began to diverge significantly. The Order had described it as dangerous, destabilizing, a stage that consumed the practitioner's sense of self. Corvin described it differently. The Unraveling was not a loss of self. It was the opposite. It was the point at which the practitioner's Hollow Seeded nature became fully active rather than partially active, the point at which the wall between what they were in the mortal world and what they carried from the Hollow thinned to near transparency. It felt like dissolution because the Order's trainees reached it without preparation and without context, their incomplete training leaving them with no framework for what was happening to them.
"Stage Six," Cael said. "Hollow Authorship."
"The ability to rewrite Thread," Corvin confirmed. "Not simply manipulate what exists but change it fundamentally. A Stage Six practitioner can alter a person's Thread to change their nature. Not their personality, not their memories, but what they are in the cosmological sense. They can alter a place's Thread to change what it is. They can alter an object's Thread to change what it does." He paused. "There are three confirmed historical instances of Hollow Authorship being used. Two of them are described in the pre-Church texts as miracles."
"And Stage Seven," Cael said.
Corvin was quiet for long enough that Cael looked up from the table.
The older scholar was watching him with an expression that had moved past academic careful into something more personal. Something that looked, Cael thought, like the expression of a man who had spent fifteen years working toward a moment and was not entirely certain now that the moment was here how he felt about it.
"Stage Seven has no confirmed historical instance," Corvin said. "Aldric believed it had never been reached. Not because it is impossible but because every Hollow Seeded individual who has existed has been killed before they could progress that far. The Church. The Order. Whatever other institutions have existed across history with a vested interest in ensuring that the thing imprisoned in the Hollow remains imprisoned." He looked at Cael directly. "Stage Seven, based on everything Aldric could reconstruct, is not a technique. It is not an ability. It is a state of being. The point at which a Hollow Seeded individual becomes capable of interacting directly with whatever is imprisoned in the Hollow as an equal rather than as a subject."
The fire had burned very low. The landlord was moving around the common room with quiet efficiency, clearing tables, not looking at them.
"An equal," Cael said.
"Not a vessel. Not a tool. Not a worshipper or a sacrifice." Corvin held his gaze. "An equal. Someone who could negotiate. Refuse. Make a choice about what the imprisoned entity does next rather than simply being used by it."
The one who was made by the Hollow, for the Hollow, and will either unmake it or become it.
Cael sat with that for a moment. Outside the rain had stopped entirely and the city was doing what cities did in the quiet hours, settling into itself, the sounds changing register from evening to deep night.
"You said Aldric believed three Hollow Born were alive in Valdenmoor," Cael said. "One is dead. I am the second." He looked at Corvin. "Who is the third."
Corvin's expression shifted into something careful and complicated.
"That," he said, "is what we need to discuss next. Because the third one is why the Ashen Conclave has been trying to make contact with you for the last six months. And also why, if we are sitting here much longer, we are going to have a significant problem." He glanced toward the woman near the fire, who was still very professionally not watching them. "She is not what she appears to be. And she has been listening to everything we have said for the last forty minutes."
Cael did not look at the woman near the fire. He picked up his ale, drank the last of it, and set the cup down with the unhurried manner of someone who had not just been told the room was compromised.
Of course, he thought pleasantly. The evening needed one more complication.