It wasn't a list of flights. It was a cascade. Thousands of permutations, connecting flights that didn't exist on any timetable, hidden codes for fares that had been de-listed a decade ago. He saw a ghost route: Pan Am flight 217 (defunct 1991) feeding into a TWA connector (defunct 2001), landing on a Northwest code-share (defunct 2008).

He hit enter.

For a moment, nothing happened. Then, the printer in the corner—a dusty Okidata dot-matrix—roared to life. It spat out a single piece of paper. The old 6-ply carbon paper. On it, in jagged, beautiful letters:

The machine was whispering to itself, solving a puzzle that had no right to exist.