“This subject is a habitual criminal and will continue to prey on victims.” Seattle cops certainly got that right.The quote comes from the arrest report in the 1990 case of Nick Kasemehas, who had just been caught doing what he does best: a $30,000 scam on a couple wide-eyed Seattleites–including the mother of a guy Kasemehas had bunked with at the Reynolds Work Release facility downtown. Kasemehas had only just gotten out of Washington state prison, where he was sent for doing the same kind of con.That was 20 years ago and Kasemehas hasn’t quit since. In this week’s cover story, Rick Anderson–whose last piece about a serial offender was recently tapped for The Best American Crime Reporting 2010 from Ecco Books–tells the absurdly entertaining tale of this Casanova Con, who’s about to turn 70, and hasn’t lost a sleazy step.