Paranoid about Parsippany Paparazzi

Well it seems we have a stalker. Some woman in a black bmw was in front of our house taking pictures this morning, at 9 am. She drove away, then came back and took more pictures--front of the house, side of the house...and of my husband's car! Then she saw my neighbors watching her and she takes off in her car, in reverse, down our street.
I reluctantly filed a police report, especially since the cops were just here last night with the dog debacle! The police officer gets here 2 hours later and says he would go look for the car, but by now it is probably gone. Really?? After 2 hours, you think? So he writes up the report and leaves, and not a minute later, the woman in the beamer is back. She drives up and down the street 3 times...slowing down in front of our house....
So I call to follow up on my police report and tell them this...and they dispatch the officer again...who drives around the neighborhood and then reports back to me that they can't find her and she was probably just taking pics of our lovely landscaping and basically stop wasting the police dept's time (thank you for the backhanded compliment, officer!).
Now I am hoping that it was someone scoping out our house for a commercial and not some nut job who is planning her revenge; not that I have a guilty conscience or anything and think someone may be out to get me. Aaack! What was that noise? Did you hear that?