If you've ever watched 1994's "Natural Born Killers," you might be a little familiar with what a spree killer is, although barely. This episode covers three of the more profound cases of rampage killings, one of which is the deadliest in American history and happened just a few years ago. It was hard to narrow the list down so small with such a plethora of options to choose from, so this may be the 1st in a few scattered installments for the future.