There's nothing quite like a mystery. We feverishly flip through mystery novels, flock to movie thrillers, and agonize over cliffhanger endings to TV episodes, all for the excitement and thrill of uncovering the truth and discovering "whodunnit." Even more fascinating than a fictional mystery? The tale of a real-life disappearance. We hear the words "vanished without a trace" and we want to learn more. Our amateur detective instincts kick in and maybe, we think, we'll even be able to solve the mystery ourselves. Join us as we remember Jimmy Hoffa and others who have famously disappeared… maybe you'll form some theories of your own.