The possession, it turned out, could not be starved of paper. It ate attention and habit. The ledger was an accountability, and the account was kept by whoever listened.

But cataloguing is a form of violence, too. Each label flung reality into a box and shut a lid on wild otherness. Tenants began to notice that some memories had been smoothed into place at a cost: a neighbor would forget a childhood nickname; a photograph of a man became a photograph of another man with a different smile. When Arthur tried to unmake a label, the building trembled like nothing he had seen; a window rattled for an hour and an old radiator clanged until a tenant called the police.

Arthur found Tom standing in the hallway as the light changed. He had a look of perplexed sleep on his face, as if he had misplaced the world and was searching for its edge. The De— reached across and put a palm to Tom’s forehead for less than a heartbeat. It was as quiet as pressing a stamp.

When he stopped erasing the boundaries between waking and sleeping, the building began to speak.

Night by night Arthur found himself less able to refuse the building. It wanted a keeper who would understand its grammar, recognize its inflections. He began to dream always of the unnumbered door, now with a view beyond it: a field of low lamp poles, each one topped with a small, inert key. The man beneath the lamp — the one who had once shown him how to press a lock with the heel of his palm — moved amongst them, knotting keys together until they formed a chain that rung like cattle bones.

If the De— was a demon, it was bureaucratic, preferring forms filled and dates initialed to the messy poetry of terror. Its appetite was procedural and patient. It required human terms, entry by entry, because it loved the slow certainty of lists. To be possessed by it was to become a clerk of a world that insisted on being tidy — at great and careful expense.

Some nights, when the lamps were long since scrubbed and the city traffic had fallen to a bass hum, a tenant would swear they heard a soft, contented clicking through the pipes: the sound of keys being counted, of a ledger being closed, of someone — finally asleep and yet still tending — humming a tuneless and patient tune in the exact keys the building liked best.