A look at another American legend: Teamster Jimmy Hoffa.
Hoffa mysteriously disappeared from a suburban Detroit restaurant in 1975. The FBI believes he was murdered to keep him from ending the mob's influence over the union. He's been suspected of being crushed in an automobile compactor, ground up in a meat processing plant, and even buried in the endzone of the old Giant's stadium in New Jersey.
He may be "sleeping with the fishes" but his final whereabouts remain a mystery.
But today, police in Michigan are following up on a new lead. A tipster claims he saw a body being buried in a surburban Detroit driveway at the same time Hoffa disappeared.
Police say their ground penetrating radar has revealed an anomaly two feet under ground.