one of the most successful documentaries in the history of film is "cocaine cowboys" that tells that story. the film made by these guys, alfred spellman and billy corbin. >> so things were in decline. cocaine sort of saved the city? >> we'd say so. am i going to get in trouble for it? >> yes. >> by 1981, you had a murder rate. you had 635 homicides here. 25% of those bodies had automatic weapons bullets. >> right. we talk about the uncomfortable reality of where a lot of modern miami came from over something you just have to hit hard when in miami in season. stone crabs. ♪ >> federal reserve branch in miami had a $5 billion cash surplus. mostly 50s and 100 dollar bills all of which had trace elements of cocaine on them.