The Midnight Timetable by Bora Chung

In a labyrinthine research facility, where those who open the wrong door might find it's disappeared behind them or that the echoing footsteps they're running from are their own, an unnamed protagonist begins their night shift under the watchful eye of the building's enigmatic senior guard.

Each evening, as the fluorescent lights flicker and the silence grows heavier, the guard shares another tale of cursed objects and lives unspooled by vengeance, sorrow or revelation. But these are not mere ghost stories. They're warnings.

Lessons. Or, perhaps, confessions . . .