He had not asked me for the card.

He had taken it.

The distinction, small as it looked, was the whole of everything, and I lay back down beside him and did not sleep, and began, in the dark, to plan.

Chapter 6 — Four Sets of Four-Digit Numbers

The next afternoon I came home from the office earlier than usual, and I found my husband sitting at my desk, bent over a small notebook, copying something into it with great concentration.

He heard my footsteps and tried to snap the notebook shut, but he was not fast enough.