Marijuana legalization is the hottest story in the US today. 22 states have authorized sales in some form. Denver has more legal marijuana dispensaries than Starbucks franchises. And like the early days of gourmet coffee chains, the rules and players are being established on the fly. Christian Hageseth is one face of the revolution -- an entrepreneur and father of three who worked in the white-collar professional world for 20 years before opening his first dispensary. The founder and chairman of Green Man Cannabis, the fastest-growing legalized marijuana company in the country, he's the perfect tour guide through the wild frontier, where police hardly know what laws to enforce, or parents what to tell their kids. He paints a colorful picture not only of how he got into the business, but of the big interests that are eager to do the same -- namely Philip Morris, Monsanto and a who's who of Big Pharma. He predicts a future where the marijuana market splits in two: the high-end, artisanal market, supplied by individual growers and small farms, and the mass market, covered by the cigarette giants and anyone bold enough to compete with them.