For decades, the Mob skimmed untaxed income from Las Vegas casinos, enriching crime syndicates across the country. In 1986, David Helfrey, chief of the Justice Department`s Organized Crime Strike Force in Kansas City, spearheaded the prosecution of several Midwestern Mafia bosses accused of skimming from the Stardust and Fremont casinos. Helfrey will provide insights into the high-profile case that inspired the movie Casino.