“Box four hundred twelve at the main branch on Elm Street.”

Detective Lewis jotted the box number in a small black notebook with a capped ballpoint pen.

“We matched that box number to a lease stub we found in his glove box,” Detective Lewis said.

“It lines up with a two-bedroom apartment three blocks away.”

“Brenda is his legal wife,” I said, keeping my hands still on my knees.

“They were married in Cook County eight years ago, and no divorce was ever filed.”

I reached into Sarah’s canvas bag and took out the heavy manila envelope that had been picked up off the store floor.