Chapter 20 - The Foundation's Secret

My fingers trembled as I reached out and gripped the wooden baseboard panel with both hands. The apartment was a new build, a modern high-rise built by a completely different development corporation, miles away from the old neighborhood and miles away from Julian's old firm.
There shouldn't be a cavity here, my mind screamed. There shouldn't be anything behind this wall.
And yet, as I pulled with a sudden, desperate surge of strength, the wooden panel gave way with a soft, sliding click, pivoting outward on a set of oiled hinges I hadn't installed.
A wave of cold, stagnant air rushed out into the room—carrying the faint, unmistakable scent of old dust, copper, and dry paper.
Inside the narrow dark cavity, sitting on a pile of discarded blueprints and old financial ledgers, was a small, glowing red LED light blinking rhythmically from a hidden digital recording device.
Taped directly to the front of the recorder was a crisp, white envelope with my name written across it in my own handwriting—the handwriting from the confession document I had almost signed on the ruined concrete slab six months ago.
My breath caught in my throat. I reached into the dark, pulled the envelope free, and tore open the seal. Inside was a single photograph and a handwritten note.
The photograph showed me—sleeping soundly in my bed just last night, captured from a camera angle mounted high up in the corner of my own bedroom ceiling.
And the note, written in Julian’s sharp, jagged cursive, read simply:
You can burn the house, Arthur. You can seal the vault. But an architect always leaves a secondary entrance in every building he designs. I built this city... and you're still living in my house.
Before I could drop the paper, the small red LED light on the recorder blinked twice, and a synthesized, mechanical voice echoed softly from the depths of the cavity.
File transmission complete. Uploading to local authorities in three... two... one...
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From down the hallway, Lily’s bedroom door creaked open a fraction further. A tiny hand reached out, placed a small piece of bread on the floorboards right beside the gap in the wall, and whispered softly into the dark,
"Don't worry, Daddy's friend. I brought you breakfast."