When I asked to see the invoice, he promised to get it.

He never did.

By then, I was beginning to recognize a pattern: he answered questions with irritation, delayed giving documents, and treated my persistence as an offense against the marriage.

I was a forensic accountant before I was Noah’s mother.

I know that suspicion is not proof.

I also know that the easiest error to overlook is the one you desperately want to be innocent.

So I made a spreadsheet.