I had spent years reading other people’s lies from a safe professional distance. Now the lie was sleeping in my bed and kissing my forehead on the way out the door. That changed the emotional temperature, but not the structure. Money still moved. Time still left fingerprints. People still got arrogant when they thought no one was looking.

So I made headings.

Dates
Charges
Claimed Location
Verified Location
Notes

Roz watched me for a minute, then opened the ice cream and handed me a spoon.

“There she is,” she said quietly.

I started with what I already had. Thirty-two hotel charges. Nathan’s shared calendar. Firm events. Dinner reservations I could find in our email confirmations. Then I moved to the smaller things.

He had started showering later on Tuesdays and Thursdays. He had come home twice smelling not like his own soap, but like the bright, citrusy kind hotels stocked in sleek little bottles. One Thursday in September, I had found glitter on the cuff of his jacket and told myself it was from an event. Two months before that, he had bought a sapphire pendant from a jeweler on Madison, then told me the stone was set wrong and he returned it.

At the time, I barely looked up from the baby registry when he said it.

Now I wrote it down.

By midnight, I had pages.

By one in the morning, I had emailed an old colleague named Dennis, who used to joke that I could smell fraud before the coffee finished brewing. He wrote back at 6:14 a.m. with one line.

You need a PI and a bulldog lawyer. Calling now.

The private investigator’s name was Doug Mercer. No relation to the lawyer I would meet later, which I only note because for a weird twenty-four hours I thought the universe might have developed a sense of narrative style.

Doug was a retired detective with a flat voice, a gray mustache, and the kind of patience that makes guilty people underestimate you. He met me in a diner off I-95 on a rainy Friday morning. The vinyl booth stuck to the back of my thighs. Coffee smelled burnt. My wedding ring felt too tight.

He didn’t waste time pretending my situation was unique.

“Cheaters,” he said, stirring Sweet’N Low into his coffee, “love routine more than honest people do. Makes them feel safe.”

I slid the printed statements across the table.

He looked at the dates, then at me. “You want confirmation or a file?”

“A file.”

That made one corner of his mouth twitch. “Good answer.”