I had smiled at the dinners and remembered the birthdays and stayed pleasantly invisible at the company events, because I had learned something a long time ago that Rupert never would: arrogant men reveal a great deal more when they are certain no one intelligent is listening.

He had been revealing things to me for eight years.

I had been writing them all down.

Not literally, not at first.

In the early years it was only the ordinary noticing a wife does — the small inconsistencies, the way a story changed slightly in the retelling, the accounts he was vague about.

I did not think of it as building a file.

I thought of it as the low background hum of a marriage in which trust was slowly, invisibly leaking out of a vessel I kept insisting was full.

It was only in the last six months that the noticing sharpened into something with a name, and the name was evidence.

But the habit was old.

A woman married to a man who lies for a living learns to keep a ledger in her head whether she means to or not, the way a person who lives near train tracks learns to sleep through the noise and wake at the one sound that’s wrong.