I'm from Northern California. And I live near all the Zodiac crime scenes. The Zodiac could still be living by me, who knows. It's pretty freaky. I love where I'm from but the one unsettling thing about Nor Cali is all the unsolved murders.
The Zodiac is scary. But nothing compares to the Original Night Stalker.
http://en.wikipedia.org/wiki/Original_Night_Stalker
Or what the movie "The Strangers" was based on.
http://en.wikipedia.org/wiki/Keddie_Murders