Chapter 1: The Forbidden Card

Nora Blake had come to Prague to find her sister, but she stayed in the archive.

This was the kind of place where time moved differently. The kind of place where three weeks could slip into one's bones without protest, where the particular cool of below-ground chambers and the smell of old leather could convince a person that the world outside might not exist at all. Malá Strana's archive occupied the basement of a decommissioned monastery, three stories of shelving carved into the bedrock itself, and Nora had claimed the western corner as her working space the moment Tomáš had shown her through the iron gate.

She'd explained to him, in her careful Czech, that she was a rare books archivist on sabbatical. She'd explained about the Rozenberg collection rumor, the seventeenth-century bindings. She'd mentioned her credentials, her restoration experience, her publication on preservation protocols. What she hadn't explained was that her sister had vanished from this very archive three weeks ago, and the police had shrugged their elegant Prague shrugs and suggested she'd eloped with a musician, as tourists did.

Nora knew better. Remy didn't elope. Remy researched.

So Nora had acquired temporary access, a desk, and the particular sanctuary that archives offered to those who understood them properly. And for three weeks now, she'd been reading her way through the catalog with the methodical precision of someone for whom reading was not pleasure but property: every volume noted, its condition assessed, its place in the larger structure of knowledge confirmed.

She worked primarily from the card catalog, that beautiful anachronism, filed by previous archivists whose handwriting became more erratic as one descended through the decades. They'd been thorough, whatever their limitations with modern database theory. Everything from the sixteenth century onward was cross-referenced, organized by provenance, subject, condition. Nora had begun to recognize the archivists' hands as she worked: there was Magdalena, precise and French-influenced; there was someone called only "K.V." whose entries were sparse and troubled, written in Czech that was angular enough to suggest fury.

It was while chasing a reference in K.V.'s section that Nora found the card that shouldn't be there.

She was cataloguing the vaults, moving through the metal filing drawers with the kind of focused attention that made her colleagues at home tell her, kindly, that she should consider getting a life. She'd been working for perhaps forty minutes, making notes on the condition of three seventeenth-century manuscripts, when her fingers caught on a card that had been inserted not into its proper slot but pressed flat against the back of an adjacent drawer.

The paper was older than its neighbors. Fragile. The handwriting was neither Magdalena's nor K.V.'s, but something older still, made with an iron nib that had dug deep enough to leave impressions on the cardboard beneath.

Nora carefully extracted the card, and in the dusty light of the desk lamp she'd brought from her hotel room, she read:

"VAULT. SEALED. Not for circulation. Not for the catalogue proper. Not a library matter. Do not unseal. Do not enter. Do not ask why. Sealer: unknown. Sealed: 1903."

Below that, in slightly less rigid handwriting:

"K.V. checked, 1947. Still sealed. Recommend leaving it so. Recommend forgetting. But the war makes forgetting difficult."

Nora read it three times. Her heart made a decision her brain hadn't authorized yet, and suddenly it was beating faster.

Do not unseal.

The problem with working in archives, Nora had discovered, was that the injunction against opening a forbidden thing was approximately as effective as telling a person not to think about a white elephant. The card was a map, and it pointed, and she was constitutionally incapable of not following a map.

She checked the filing system again, consulting the reference codes with the rigor of a surgeon. The vault didn't appear in the main catalog. She had to cross-reference through K.V.'s personal entries, through a system that seemed designed specifically to obscure, to make finding the thing nearly impossible. Which meant someone had wanted very much for the vault to be found, but only by someone looking hard enough.