The memo landed on my desk at 8:47 AM, folded into a sharp, accusatory triangle.

Then—a child’s voice. Clear as a bell. Singing a lullaby in a language I didn’t recognize. Nita’s breath hitched. “Oh. Oh, no. You’re not—” The recording glitched. Three seconds of pure white noise.

First, silence. Then the low thrum of a diesel engine. Nita’s voice, younger, sharper: “Track 03. Solo trip. San Simon, Arizona. Abandoned schoolhouse. External mic check.” A door squeaked open. Footsteps on broken tile.

The Post-it note was gone.

I pressed play.

I turned the disc over. The plastic was warm, as if it had just been burned. My office was empty. The janitor had left at 6 AM.

But on my desk, right where the CD had been, was a fresh yellow square. In the same shaky hand, one line: