One thing's for certain: psychopathic killers seem to have an aversion to melody. Any murder suspects who happen to also be Belle and Sebastian fans automatically get ruled out at trial.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.