The rain had been falling on the library's skylight for six hours without a break when Eli found the second alcove.
He had been working through the uncatalogued boxes in systematic order, opening each one, logging the contents, and moving to the next. Most contained predictable material — donated periodicals, civic records, maps of indifferent quality.
One contained forty-seven years of somebody's personal correspondence, neatly tied with ribbon, which would need its own cataloguing project. Another contained a collection of Victorian trade cards for businesses that had closed before the First World War.
Marrow supervised from the daybed, occasionally rising to examine a specific box before returning to his position with the quiet efficiency of a quality control inspector who had concluded the item was not yet relevant.
The second alcove was behind a section of the room's original pine wainscoting — a panel that looked fixed but had been constructed to open on a pivot. Eli found it by following a draught: a thin current of cooler air that moved through the room at floor level when the main archive door was open, suggesting a secondary air path through the southern wall.
The panel pivoted on a central pin when he pressed the upper left corner, rotating smoothly on a mechanism that had been oiled recently — far more recently than 1888.
Someone had been in this alcove.
The space behind was roughly the size of a wardrobe, stone-walled and low-ceilinged. On a wooden shelf inside was a metal document box, approximately the size of a small suitcase, locked with a barrel lock. The lock was of the same period as the brass key from the pocket watch. Eli withdrew the key and held it at the lock.
He was aware that this was a significant moment. He was also aware that Marrow had appeared silently at his side, sitting with his paws precisely together on the stone floor, watching.
"Right," Eli said quietly. "Here we go."
The key turned in the lock with a clean, well-machined movement. The box opened.
Inside, protected by layers of oilskin wrapping, was a leather-bound volume — a hand-sewn document, roughly four hundred pages thick, with covers of dark brown calf leather that had survived their 130-year wait in excellent condition. On the front cover, stamped in gilt letters that had faded to a pale copper: The Record of the Harbor Mist Coast. Compiled by the Harbor Mist Historical Society, 1888. Custodian: E. Vane.
And below that, added in different ink, in the careful handwriting Eli recognized from the telegram: This record was falsified. The true record follows. Read from page 212.
Eli sat down on the stone floor of the alcove, opened the volume to page 212, and began to read.
Behind him, Marrow sat in the doorway of the alcove between the archive room and the hidden space, his tail wrapped around his feet, watching the corridor.
He photographed every page of the record before he moved anything else. He used the archive's document camera, which produced high-resolution images of each page under controlled, non-damaging light, and saved every image to the archive server under the file name he had assigned to the discovery.
He worked systematically from page one through to the end — first the official published version, then from page 212 the annotated original continuation. Every annotation, every cross-reference, every note Emmeline Vane had made in the margins in her precise, confident hand.
The seven names. The witness accounts.
The dates.
He sent a copy to his personal encrypted drive before the archive server had finished processing. He sent a second copy to the national digital archive's ingestion queue. He titled the submission: Vane, E. Harbor Mist Coastal Record, 1888. Original annotated manuscript. Priority preservation.
When all copies were confirmed, he called the city archivist's emergency line from the archive's desk telephone — a number reserved for situations involving genuinely significant discoveries — and explained, in the careful neutral tone he had been practicing in his head while doing the photography, what he had found and where it currently was.
The city archivist asked three clarifying questions. Then she said she would be at the library at eight the following morning.
Eli thanked her, replaced the receiver, and sat for a moment in the quiet room.
Marrow was still in the alcove doorway, watching the corridor.
The digital copies were secure on the server. The physical volume rested safely in its archival enclosure.
The high-resolution scans were safely indexed in the permanent digital catalog.