captioning by captionmax www.captionmax.com [watch ticking] >> bradley birkenfeld spent most of the last decade living in switzerland helping wealthy americans hide their money. you'll hear how he did it and how he touched off an investigation that would shake 300 years of banking secrecy to the foundation of its underground vaults. how unusual is it for a swiss banker to come forward and say, "this is how it works"? >> it's never happened before in history. i'm the first one. [watch ticking] >> many of the deals that helped create the current financial crisis would have been illegal during most of the 20th century, in violation of gaming laws. but in 2000, congress gave wall street an exemption that's turned out to be a very bad idea. >> it's legalized gambling. it was illegal gambling, and we made it legal gambling. >> with no regulatory controls. >> with absolutely no regulatory controls. zero, as far as i can tell. >> i mean, it sounds a little like a bookie operation. >> yes. [watch ticking] >> i don't to die. i shouldn't have to die. >> helen sharp, suffering from lymphoma, just go