The woods have eyes.
And so do window peepers. A tall privacy fence, locked on the inside with no outside handles makes me feel safe when I'm alone. That and every outside flood light on.
In my younger married years I had a neighbor, a short greasy fat creepy looking man I thought liked to sky watch with binoculars from his perch on the second story of his house. Even during the day when he was up there I thought he was an avid bird watcher.
He wasn't. It was a cover for him looking into people's houses and watching whatever.