A (like a bustling city or a remote island)

Elias knelt, digging through the dirt and dead leaves. His fingers hit something cold and hard. He pulled out a heavy brass key wrapped in a plastic bag. Attached to it was a small tag with a single number: 3503.

Elias felt a chill. His father had never mentioned a key, a gate, or an elm. He began to cross-reference the metadata of the image. The coordinates embedded in the file pointed to a small, overgrown estate on the outskirts of their hometown—a place his father had always told him to avoid.

Unlike the others, this photo was crisp, almost eerily sharp. It wasn't a family photo. It was a shot of a handwritten letter pinned to a door he didn't recognize. The handwriting was his father’s, but the date at the bottom was from a week after his father had passed away.

The camera—a weathered Sony Cybershot from 2008—had been sitting in a shoebox for fifteen years. Elias found it while clearing out his late father’s attic. When he plugged it into his laptop, the screen flickered to life, revealing a gallery of mundane moments. But then he saw it: DSC03503.jpg.

The letter in the photo was simple: "I left the key where the shadow of the elm meets the iron gate at noon. Don't wait for me."