"You're certain."
She lifts her face to mine, freckles stark on bloodless skin, hazel eyes furious and alive. "No. But I'm right. Step where I step. When I say."
I clamp down the urge to take over, and I let her take lead.
"Now," she says, and steps. "Wait. Now."
We thread through on her count, the four of us suspended between her words while the water rattles its warning and falls quiet in turns. I have ended armies. I have never leaned on anything the way I lean on her voice now. When the last seam clears my shoulder without snapping shut, I allow myself one breath of relief and no more.
Inside Sablecrest it swallows us whole. It is not a fortress. Snapped timber, black with frost. A nave's worth of chapel stone fallen inward. Dead bells half-drowned in ice that never once thawed. Beneath the prayers runs the older grammar: keeper marks cut into bedrock, vampires hidden under the saints.
"They buried a stronghold and built a cathedral on its neck," Cassandra murmurs. "To stop humans digging too deep."
Riley doesn't answer. The relic has woken in her fist. It draws no map this time. It pulls—a hard, blind tug toward three sealed doors beneath the ruined nave, each crowned with a name in the old tongue. Cassandra reads them, and her pause tells me everything.
"Two of these are lies," she says. "Bait-names. Open them and the whole approach drops on your skull." Her finger moves to the third. "This one's been damaged. On purpose."
I see it then, and the centuries close cold around me. ""Keeper threshold," I say. "An old vault-door law. Blood, witness, intent. Built by vampires to keep vampires out if they came for it wrong. It was used when our own turned against us. You scar the true door so no enemy reads it clean."
Above us, we hear muffled boots. Voices bleeding down through forty feet of stone. Lucien's people took the obvious road after all.
Gabriel is already shrugging off his coat, grinning like this is what he waited for. "I'll make them earn every floor. Three wrong turns and a few new scars." He points at me. "Open the damn door, old man."
"Gabriel—"
"Don't." The grin gentles by a degree. "I'm going."
Cassandra stays. We need someone who can read keeper law, and she is the only one still breathing who can.
I step closer. I know the old rule. I draw my thumb across a fang and press my blood into the groove. The door refuses me. The ceiling cracks. I whip and pin Riley against the far wall as a spike of iron rips from the stone where her skull would have been. The blow empties my lungs and whites my world. It does not matter. She is breathing. That is the only line in the ledger.
"Nico." Riley's hands fly to my face. "You."
"I'm fine." I am not. "The door was never waiting for me."
Cassandra's hand stills over the wall. "This mark is older than Thomas Harrow. But the damage isn't." Her gaze cuts to Riley. "He didn't change what the threshold is. He changed what it would recognize. Vampire blood still tests the old law. But Thomas redirected it to the answer to something human, something marked by his trail."
She pulls back, and I watch the fury land, not on the stone, but on a dead man. "He knew," she says, low and shaking. "He knew this wasn't vampire blood. He knew it needed his trail, his mark, his daughter." She turns the relic, fitting Thomas' clue to the damaged groove, rebuilding what he cut away. "He could've told me. He could've given me one straight answer. Doesn't matter. Lucien doesn't reach this first."
She opens her palm before I can catch her hand. The relic ignites with blue and the damaged mark drinks the red and wakes. Frost-light crawls up the stone, and beneath my skin the bond claws at me. I ignore it because she's her own woman.
The door does not open onto a vault. It opens onto a throat into the earth, a descent of black stone and iron falling past sight, older than the mission, older than me. At its heart waits a lock cut to take the relic.
"Cassandra. What's down there?"
She stares into the dark, and I watch fear take her. "The entrance. Not the vault. If this is only the door, I'd prefer not to meet what it keeps safe."
Behind us, the lower chamber breaks open. Gabriel staggers back into the light, blood sheeting his face, still grinning through red teeth. "They're through," he pants. "Lucien sent his best."
Then they pour in, and I plant myself between them and her. Riley stands at the lip of the descent, the relic blazing awake in her ruined hand.
27
RILEY
The relic is burning my hand, frosting it, throwing blue light down to the entrance. It doesn't hurt, it's sending a pulse through me like it's warning me. Iron shrieks where Lucien's people lever the old gate off its pins. I hear the wet crack of someone meeting Gabriel's fist, then a snarl that has stopped being polite.
"Down." Nico doesn't turn around. He's a black wall between me and the breach, coat thrown wide, and the only gentle thing in him is his palm landing on my shoulder. "Move, Trouble."