It has happened twice this week. Once on Tuesday 2:07am and then again Thursday 1:04am.......the door bell rings only once. Our motion sensor front garage door light fixture is on but no one in sight. My husband has gone outside all the way to the street but no one can be seen in either direction. Are we the only targets? Kids?

happens

yes, this has happened to several neighbors in the area. You probably have a few kids living nearby.