My husband brought his mistress to the gala wearing my dress and wedding ring. When she was introduced as his wife, he stayed silent. I put on a black suit, called my lawyer, and waited for our son to say, “Dad, today you pay for everything.”

Luke opened another folder.

Inside were photographs of me entering restaurants, meeting clients and leaving office buildings. Each had been taken from misleading angles, making ordinary business interactions appear secretive or romantic.

“Brenda sent these to Dad,” he explained. “He chose to believe them because they gave him an excuse for his own behavior.”