27. The Forbidden Shelf #2
By the fourth hour the table was covered in open books and loose pages and handwritten notes, and the energy in the room had shifted from focused to fraying.
Remy had his forehead on the table. Victor was rubbing his eyes.
Even Evie had gone quiet, which for her was a significant indicator of exhaustion.
“We're not finding it,” Nico said. He pushed back from the table and pressed his palms against his eyes.
“The collection is extensive. The cross-references alone—”
“I know. I know it's here. I can feel it. But we've been through three thousand pages and none of them match the crest on the lid.”
Then Nico dropped his hands. His head turned toward the mezzanine.
“What is it?” I asked
He didn't answer. His eyes had gone slightly distant, focused on something I could not see nor hear.
“Nico.”
“Did you hear that.?
“Hear what?”
He stood. “A child laughing.”
The room went quiet. Mateo's hand went to the door. Rowan shifted his weight.
“There is no child in this house,” I said.
“I heard it.” He was already moving toward the spiral staircase. “It came from up there.”
He climbed the staircase and I followed.
The mezzanine wrapped around the upper level of the library, shelves continuing along its walls in an unbroken line.
Nico moved along the railing without pausing, his hand trailing the shelf spines the way he trailed his hand along surfaces in his shop, reading them, and he passed the section on contractual law and the section on territorial mechanics and the section on blood architecture and continued toward the far corner where the shelving met the east wall.
“Nico. That section ends at the wall.”
He didn't stop. He reached the end of the shelving and put his hand flat against the stone.
The wall opened. The stone folded inward and behind it was a space I had never seen.
I had catalogued every room, every passage, every hidden chamber that the house had disclosed to me. This was not one of them. Blackthorne had been keeping it from me, or keeping it for someone who could open it.
The space was small. A reading alcove, barely large enough for two people, with a single shelf built into the wall. On the shelf was a book.
The binding was dark leather, cracked and worn, and the pages visible at the edges were not paper. The cover bore a symbol that I recognised.
The serpentine crest. The same coiled form that Nico had described on the lid of the artifact Sabine had taken.
Nico reached for it.
“Wait,” I said.
He looked at me.
“That book is warded. The symbol on the cover is a binding mark associated with Abyssal threshold objects. Opening it without preparation—”
“Draco. The house let me in here. If the book was going to hurt me, the house wouldn't have led me to it.”
He opened it and the pages fell to a spread near the centre that had been waiting.
The text was in a language I recognised from my earliest years, older than Latin, older than most written systems that had survived into the modern era.
The illustrations were rendered in ink that had not faded, which was itself significant because ink that did not fade had been made with blood.
The artifact was on the left page. Drawn in careful detail, from multiple angles, with annotations in the old language that described its dimensions, its materials, its construction, and its purpose.
“That's it,” Nico said.
I read the text.
“Draco.” Nico was watching my face. “What is it?”
“It is called the Clavis Inferni. The Key of the Lower Threshold.” I looked at the page and felt the weight of what I was reading.
“It is a item required for opening a passage between this world and the nine sealed dimensions that exist below the threshold plane. The dimensions that the old texts refer to as the Hells.”
“The nine hells.”
“They are not hells in the theological sense. They are sealed dimensions that contain entities which were imprisoned there during the wars that preceded recorded supernatural history. The seals were built by threshold-blooded mages and they have held for millennia.”
“Marcellus now has that key to open them.”
“The mechanism alone is insufficient. To activate the Clavis, you need a threshold. A living one. A door that can open the passage between planes.”
Nico's face went very still.
“They need me,” he said.
“The Clavis channels the threshold gift and directs it at the dimensional seals. With the artifact and your blood together, the seals can be broken. All of them.”
“What happens when the seals break?”
“Everything that was imprisoned comes through.”
The library was silent. Below us, Evie had risen from her chair. Remy was staring up at the mezzanine. Marisol's hand was pressed over her mouth.
“Vane doesn't want to destroy me,” I said.
“He doesn't want my territory or my council seat or my house. Those were intermediate objectives. He wants the Clavis and he wants Nico and he wants to open every sealed dimension and position himself as the only creature powerful enough to survive what comes through. A god among the ruins.”
Nico looked at the book. At the drawing of the artifact that was now in Sabine's hands, on its way to Marcellus Vane, who had been building toward this for longer than I had understood.
“He killed Cassiel for this,” Nico said.
“Cassiel was threshold-blooded. Weaker than you, but present. Marcellus killed him to prevent Cassiel from being used as the key by anyone other than himself. When Cassiel died, the threshold line went dormant for centuries.” I looked at Nico in the hidden alcove of a library that had been waiting for him since before I'd bought the house.
“When you were born, the line woke up. And Marcellus has been manoeuvring to reach you ever since.”
Nico closed the book. He held it against his chest.
“So the plan,” he said, “is that we find the Clavis before Vane can use it. We keep my blood out of his reach. And we stop a man who has been working on this for centuries and who has already killed one version of me to get here.”
“Yes.”
“And the team we have is a recovering addict mage, two mages who haven't used their gifts in thirty years, a phoenix, two wolf shifters, a vampire lord with a silver wound, and a threshold-blooded antique restorer who found out he was magical six weeks ago.”
“That is an accurate summary.”
He looked at me. Then he looked down at the library below, at his family and his friends and the wolves at the doors and the house breathing around all of them.
“Okay,” he said. “Let's go save the world.”