My husband handed our daughter a promissory note instead of a tuition check. He called it a loan, with interest, due after graduation, and told her to thank him for the lesson. I thought he was teaching her about money—until I found the ledger. My life reduced to a balance sheet: groceries, piano lessons, a winter coat, itemized. And hidden at the bottom, transfers to an account I'd never seen. Twenty-seven thousand dollars over eighteen months. Then a hundred and ten thousand, labeled 'settlement.' Four years ago. The year our marriage almost ended. He's a bank president. He knows how to hide money. But I was an analyst before I became his wife. And I'm about to find out what my marriage has been financing all along.