Seraphine didn't answer right away, rereading it once more as though she expected the words to change the second time through.
"It's not addressed to House business at all," she said finally, quietly. "It's addressed to me. Personally. From Isolde, not as my sister giving an order, but as my sister trying to warn me about something." She looked up at him, and for the first time since the checkpoint, Rhys saw something in her expression that looked genuinely afraid.
"She says I shouldn't trust anyone else in this House with what I've learned. Not our father. Not the council. Not anyone but her. And she says if I bring you to the archive without her there in person, she can't promise what I'll find there will still be the truth by the time I read it."
"There's someone I want to see before we go anywhere near that archive," Seraphine said, folding Isolde's letter away with careful, deliberate hands. "Someone who knew this House before Isolde controlled every door worth walking through."
The house sat a half day's ride off the main courier road, small and unassuming for a place connected to House Duvall at all, its garden overgrown in a way that felt more lived-in than neglected. The woman who answered the door was well past seventy, silver hair pinned back severely, sharp eyes that took in Rhys's travel-worn state and Seraphine's tension in a single unhurried sweep before she'd said a single word.
"Little bird." The old woman's voice carried real warmth, softening something in Seraphine's posture that Rhys hadn't seen ease even once since the checkpoint. "You look like you've been running from something. Or toward it. With you, it was always difficult to tell the difference."
"Both, probably, Mistress Farrow."
Seraphine allowed herself something close to a real smile, brief but genuine. "This is Rhys. Rhys, Odessa Farrow. She taught Isolde and me everything we knew before either of us was old enough to know we were being taught."
"Taught you what mattered, at least." Odessa's sharp eyes settled on Rhys with open, assessing curiosity. "The House stopped listening to what I had to say about anything else a long time ago. Come in, both of you. Whatever's brought a Duvall heir out to my door with a stranger in tow clearly isn't a social visit."
The inside of the house was warm and cluttered in a way that felt more honest than anywhere Rhys had been since Hollowmere, shelves crowded with books and small keepsakes rather than House crests and formal portraits. Odessa settled them both at a worn kitchen table and set about making tea with the unhurried certainty of someone who'd done it for two frightened children a hundred times before.
"Isolde sealed the archive years before either of you were old enough to understand why," Odessa said, once Seraphine had laid out enough of the situation to make the shape of the problem clear, careful as she was to leave out exactly what Rhys was. "I served this House for forty years before I aged out of its patience for me, little bird, and even I was never given a clear answer for why. Only that it happened not long after your great-grandmother's name quietly left the family record."
"Do you know why it left?"
"I know what I was told, which was almost certainly not the whole of it." Odessa poured the tea with steady hands. "There was talk, back then, of a debt owed. Not coin. Something older and less comfortable than coin. The kind of debt that gets buried in a sealed wing rather than settled honestly, because settling it honestly would have cost the House something it wasn't willing to pay."
"A debt to who?" Rhys asked, unable to hold the question back any longer.
Odessa's sharp eyes turned fully on him for the first time since they'd sat down, studying him with an intensity that made him distinctly aware of how much she'd already guessed without being told outright.
"I don't know, young man. That's the honest answer, and I've learned the value of giving those, even when they're unsatisfying." She set the teapot down. "What I do know is that whatever it was, it frightened your family badly enough, Seraphine, that your grandmother refused to speak of it even to her own daughters. Fear like that doesn't simply vanish because a new generation decides not to ask about it anymore."
For a while, the conversation drifted into gentler territory, Odessa recounting small memories of Seraphine and Isolde as children, a scraped knee here, a stubborn refusal to share a favorite book there, and Rhys watched Seraphine soften further with every story, watched her become, briefly, someone younger and less burdened than the composed, careful woman he'd been traveling beside since the checkpoint. It was a good thing to witness, even amid everything else, a reminder that whatever she'd become out of necessity, there was a whole person underneath it who'd existed long before any of this began.
It was as they were preparing to leave, Seraphine already reaching for her travel pack, that Odessa's expression shifted, something troubled crossing her weathered face.
"One more thing, little bird, before you go." She hesitated, clearly weighing whether to say it at all. "You mentioned Isolde's letter claimed she alone controls access to the archive now, and has for years."
"That's what it said."
"That's not quite right, or it wasn't, the last I heard anything reliable out of this House." Odessa frowned, turning the thought over carefully. "There was a second key. There always was, kept separate from Isolde's, held by whoever served as House Steward at the time, precisely so no single heir could ever seal that archive away entirely on their own authority. It was meant as a safeguard, put in place generations ago."
"Who holds it now?"
Odessa's frown deepened, the warmth of the last hour draining slowly out of her expression as she considered the question in earnest.
"That," she said slowly, "is what worries me. Because the Steward who held that second key retired eight months ago, and I have heard nothing, from anyone, about who was appointed to replace him. Which means either the position sits empty, and Isolde's claim of sole control is true after all, or someone new holds that key, and neither of you has any idea who that person is, or what they intend to do with it."