90 Miles off the coast of Key West, Florida is a hidden treasure, one that if opened could generate millions in revenue for US based businesses. That treasure is of course Cuba, a tiny island under the crush of economic sanctions but also on the edge of major transformation. CNBC’s Michelle Caruso-Cabrera brings viewers the story of the communist country’s recent reforms, its people and its untapped potential in the CNBC Original Production, "Cuba: Forbidden Fortune."