In 1931, the massive Hoover Dam project brings thousands of workers to Nevada. They have paychecks and nowhere to spend them. The state legalizes gambling, setting a small, dusty town called Las Vegas on its way to becoming an unsurpassed phenomenon. The mob realizes there are untold riches to be made in gaming, and by the late 1940s, gangsters Meyer Lansky and Benjamin Siegel are opening casinos on the fledgling Strip. For the mob, the situation is a dream come true. Gambling is legal, prostitution is ignored, and local politicians are either for sale or agreeable. And best of all, there’s virtually no competition. But that won’t last.