As Lake Mead's water recedes, theories emerge about identity of human remains found in barrel — and possible mob links

Mobsters who end up sleeping with the fishes are usually never seen again.  

But climate change has a way of messing even with the mafia, and a watery grave outside Las Vegas is starting to cough up Sin City's darkest secrets.

Lake Mead, which can be reached from the Las Vegas Strip by a short ride in the trunk of a car with your hands and feet bound, is drying up in a grueling decades-long drought.