it's revealing, and it's raw. >> it tears you up inside. i don't even get letters. nothing. >> hello. i'm chris hansen. a team of producers, photographers and i spent more than a year following several sting operations conducted by the las vegas police department. we were given unprecedented access to law enforcement, and an underworld that exists beyond the glitz of the vegas strip. but only a fraction of what we shot was ever broadcast. until now. in this hour of "vegas undercover raw," you'll meet criminals, hear how they committed their crimes, and th en i confront many of them in jail where some lies are told, but also some revealing truths are exposed. >> this is the [ bleep ] they're talking about. i'm sitting here talking to the home boy right now.