Hot guns; human cargo; back street gambling; bad pharma; fake brands; outlaw sex. Tax free; c.o.d. the black market can be brutal, exploitative, corrupt. Nothing is off-limits; everything is for sale. And what you buy may not be what it seems. But it puts $625 billion into the US economy every year. No one has ever before gained access to the inner workings of this last bastion of ‘free’ enterprise. Until now.