Over here in Seattle, back in the early 80's, some guy killed a bunch of women - like 45 or so. He stopped, and nobody ever found him.
Until this last weekend, when they arrested somebody based off of a saliva sample they picked off of him 10+ years ago.
[link|http://seattlep-i.nwsource.com/local/49114_invest03.shtml|url]
If this is the guy, I'm glad they finally got him...