The package arrived on Tuesday, but Elena didn't open it until Wednesday morning. She'd learned the hard way that suspicious parcels demanded daylight and witnesses.
Inside, nestled in black velvet: a brass key, ornate and heavy, with teeth that looked more like a cipher than a lock mechanism. No note. No return address. Just her name typed on the label in a font she recognized—Courier New, the same typeface from the anonymous letters that had started appearing six months ago.
They know where I live now.
Elena photographed the key from every angle, then dropped it in her pocket. The metal was warm, almost feverish against her palm. She grabbed her jacket and headed for the university library, where Professor Chen was waiting.
"You look terrible," Chen said, not unkindly.
"I got another one." Elena placed the key on the reading table between them. "This changes things."
Chen's expression shifted from concern to something harder to read. She picked up the key, held it to the light. "Where did you find this?"
"It found me. Like everything else."
"Elena." Chen's voice dropped. "This isn't from them. This is much older. See these markings?" She traced the shaft with one finger. "Pre-Columbian. Possibly Incan, but the geometry is wrong. This shouldn't exist."
The library's overhead lights flickered. Both women looked up.
"The archive," Chen said quietly. "There's something you need to see. I was waiting for the right time, but—" She stood abruptly. "We need to go. Now."
Elena followed her through the stacks, past rows of forgotten dissertations and dusty reference materials, to a service door she'd walked by a hundred times without noticing.
Chen produced her own key—modern, ordinary brass—and pushed the door open.
Beyond it, stairs descended into darkness. And from somewhere far below, Elena heard it: the sound of machinery that shouldn't be running. That couldn't be running. Not in a building constructed in 1892.
"After you," Chen said, and something in her smile made Elena's hand instinctively close around the key in her pocket.
The metal had gone cold.
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