The castle began to fall apart around them almost immediately.
Not violently — Katherine understood, in the strange gentle way the throne room's black stone had started to lighten and thin, that this was not collapse so much as unmaking, the same specific quality the demon queen herself had gone out on, a whole world that had only ever existed to serve her patient three hundred years now finding it had no further reason to hold its shape.
"We need to move," Thomas said, already gathering the house toward the doors. "Whatever this fold was built on, I don't think it's going to keep existing much longer now that the thing holding it together is gone."
They ran. The corridors thinned around them as they went, black stone growing translucent in patches, the violet-veined symbols on the walls fading one by one as though the castle itself were forgetting the reasons it had ever needed them. Katherine kept one hand near Thomas's arm the whole way, not for balance, but for the simple reassurance of feeling him still there beside her after a day that had asked so much of everyone.
They passed the chamber where Kristen had died. Nobody stopped. There would be time, later, for the stopping — right now the castle's slow unmaking demanded speed, and grief, KaSandra understood, would keep for exactly as long as it needed to.
Mr. and Abigail Tempest ran with them, the stolen page still clutched carefully in Abigail's hand, the specific weathered gratitude of two people who had spent weeks chasing a translation only to arrive with barely enough time to use it.
"I don't suppose there's a faster way through this castle than the one we came in by," Mr. Tempest said, breathless, as another corridor's wall began, faintly, to lose its edges.
"There isn't," Thomas said. "Keep moving. We're close."
The meadow of dead flowers outside had already begun losing its grayness, color bleeding faintly back into stalks that had been dead for longer than any of them could account for, and William found the return door with hands that shook only slightly from three weeks of holding an entire war's worth of urgency, opening the fold back toward the garden they'd left it from with a relief that showed, for once, plainly on his face.
"I wasn't sure it would still be there," William admitted, as the fold settled into shape under his hands. "The queen's death might have severed the connection entirely. I've never once built a door back out of a world that stopped existing while I was standing inside it."
"But it held," Katherine said.
"It held," William agreed, and something in his exhausted face allowed itself, finally, a small measure of relief.
They came through into ordinary daylight, the dead tree standing exactly where it always stood, and behind them the fold closed with a sound like a held breath finally released, sealing away a castle and a meadow and three hundred years of patient cruelty into whatever nothing swallowed worlds that no longer had a reason to exist.
For a long moment nobody spoke. The garden's ordinary birdsong felt, after the throne room's ringing silence, almost too loud to bear, and Katherine found herself simply standing in the grass, breathing air that smelled like grass and dirt and ordinary afternoon instead of violet torchlight and three hundred years of patient cruelty.
Katherine felt Kristen's absence the moment her feet found solid, ordinary ground — the specific hollow space in the group where a blink-light and a sharp, steady laugh should have been standing, and understood that the garden's return to daylight had not, could not, undo the one loss the castle had actually cost them.
Ashton, still favoring the side Davran's stolen half-seconds had wounded, was the first to sit down hard in the grass, not from injury but from the sheer weight of finally being allowed to stop moving. Jasper knelt beside him without a word, the two of them sharing a grief neither needed to explain to the other.
Tierney moved through the returning group the way she always moved through crisis, counting heads without seeming to count them, and it was her hand that found KaSandra's shoulder first.
"You're bleeding," she said, gently.
KaSandra looked down at her own arm, at a shallow cut she hadn't noticed taking somewhere in the throne room's chaos, and found, to her own mild surprise, that she felt it for the first time only now that there was room to feel anything at all.
"It's nothing," she said. "It'll keep."
"Everything keeps, until it doesn't," Tierney said, already reaching for the small kit she carried on instinct rather than necessity these days. "Sit down and let the house take care of you for once, KaSandra. You've spent two years taking care of the rest of us. Let this be the day that runs the other direction."
KaSandra sat, finally, in the grass beneath the dead tree, and let Tierney clean and bind the cut with the same steady competence she'd applied to every wound this house had carried through two years of war, and above them the tree's bare branches stirred faintly in a breeze that carried nothing of ash or violet torchlight at all.
The Tempests stayed only long enough to see the house settled before insisting, over everyone's objections, that they had a long overdue report to deliver to the handful of contacts who'd helped them track down the translation, and that the house's rest mattered more than their staying to watch it happen.
"We'll be back," Mr. Tempest said, shaking Thomas's hand with the particular firmness of a man who meant it. "This isn't goodbye. It's just — we've been gone from our own lives for three weeks chasing a page of half-dead language across two countries, and I think we've both earned a night in our own bed before we come back to properly celebrate."
"Thank you," KaSandra said, and meant it with a depth that surprised even her. "Without that spell, I don't know what tonight would have cost us."
"Without the three of you actually casting it," Abigail said, "the spell would have just been a very old piece of paper we nearly died carrying across a continent for nothing. Don't thank us too much. We only found the key. You're the ones who turned it."
They left as the afternoon began sliding toward evening, and the house that remained settled slowly into the specific exhausted quiet of people who had survived something enormous and had not yet found the words for what came next. William checked the fold's seal twice more, out of habit more than necessity, and pronounced it fully closed. Niall lay flat in the grass for a long while, simply listening to the earth the way he always did after a fight, as though confirming for himself that the ground beneath this garden had never once stopped being real.
Katherine found Carlyle sitting alone near the garden's edge, staring at nothing in particular, and sat down beside him without a word.
"I keep waiting to feel it," Carlyle said, finally. "The victory. Everyone talks about what it's supposed to feel like, ending something this large. I don't feel anything yet except tired."
"I think the feeling comes later," Katherine said. "After the tired wears off enough to leave room for it. I don't think either of us is there yet."
They sat together as the light faded gold and then gray behind the dead tree's branches, and slowly, one by one, the rest of the house found their way to the garden as well, until nearly everyone who had walked into that castle that morning was sitting together in the grass, saying very little, simply being present for one another in the particular way a house learns to be present after it has asked everything of itself and somehow, together, survived the asking.