In the days of commuter employment, this perp could really be ANYONE. Anyone, seriously. My husband and I both work from home and a number of folks on our street have traditional jobs with non traditional work hours. Some go into the office 3 days, work at home for 2. A manager of a car lot, an attorney, insurance claims, a couple of nurses, etc..... One nurse who works several long days is often seen pulling in after dropping her kids off after 9. Half of our culdesac is often home during the day, and I can count on one hand when I have come home to an empty, carless culdesac- and we all work.
Just a thought. The options are really limitless, in my opinion, of who this perp could have been and where, if he was, employed.