Part Four: The Trace
It was the light.
The particular quality of light in Meridian’s east section — the warm, low overhead light combined with the ambient glow from the street-facing window — created, at certain angles, a specific kind of visibility. Objects caught the light in unexpected ways. Sophie had noticed this before, idly, without assigning it significance.
Tonight it assigned itself significance.
As Daniel Ashworth’s hand moved toward the glass of Scotch, the motion caused the glass to shift very slightly on the table — a fraction of a degree, no more — and the light caught the rim of the glass in a way it hadn’t a moment before.
Sophie’s hands stopped moving on the napkin.
At the rim of the glass, barely visible, almost nothing — there was something. A residue. A faint trace of something that had dried into an almost-invisible ring along a section of the glass’s inner lip. It was not ice residue, which she had seen a thousand times and which had a particular look, a white and crystalline quality. This was different. This was faintly iridescent — the way certain chemicals are iridescent when they catch light — and it was concentrated in one arc of the rim rather than distributed evenly, which meant it had been applied, not condensed.
Sophie had studied biochemistry for two years. She had spent hours in laboratories where the first and most fundamental lesson was: learn to see what is in front of you, because small things in small amounts can have large consequences. She had not thought about that training in some time. It came back now with a clarity that seemed to override everything else in her awareness.
The man’s hand was around the glass. He was lifting it.
She had perhaps three seconds.
There was no time to explain. Explanations take longer than three seconds, and during an explanation a person can complete the action you are trying to prevent. She was four meters away. She was already moving.
