purchasing this heroin that's high purity and either smoking it or snorting it. it's become chic. >> it's been called the perfect storm in all the wrong directions. very pure heroin that's easy to get for less than the price of a six-pack of beer is flooding the suburbs of the northeast and it's no longer coming from southeast asia or afghanistan. mexico actually supplies most of the heroin west of the mississippi but the biggest supplier in the northeast is a country that made its reputation selling another drug -- colombia. although some intelligence analysts and law enforcement officials disagree, as early as the 1980s there's evidence that members of the cali cocaine cartel in colombia decided to expand their product line. >> everybody remembers "miami vice" in the '80s. why did they switch from cocaine to heroin? >> greater profit margin. with heroin you can cut it significantly more than you can cut cocaine. >> according to some law enforcement officials, when the