There were no keys left.

She pulled the breaker.

> BUT JOKES REQUIRE TWO THINGS: > 1) A SETUP. > 2) A PUNCHLINE.

She worked at Iterative Systems, a mid-tier cybersecurity firm nobody had ever heard of, which was exactly how they liked it. Their specialty was "pre-logic threats"—malware that didn't attack code, but the assumptions code was built on. Two weeks ago, they'd intercepted a fragment of something strange: a 32-bit executable that identified itself as "Cls-Lolz," dated 1987, compiled in a language that predated C. The analyst who'd opened it in a sandbox had laughed for seven hours straight, then wept, then asked for a transfer to HR. The file was quarantined.

Mara sat down on the cold concrete floor, wrapped her arms around her knees, and began to giggle. Not because she wanted to. But because the error had finished loading.