Then a third figure stepped into the camera frame.

It was a professional-looking woman wearing a tailored coat and carrying a thick leather portfolio under her arm.

She was clearly not a police officer.

She pointed calmly toward something attached to the wall right beside the heavy front door.

I pinched the screen to enlarge the camera image so I could see better.

A legal envelope had been taped directly beneath the bright porch light.

I had certainly not placed it there.