How Dublin transformed from a recession-blighted city in the 1980's to a growing metropolis in the 1990's. As its fortune changed, so too did its criminals. They spotted new opportunities. Those opportunities were sourcing and selling a succession of illegal substances - heroin, ecstasy and cocaine. As these drugs exploded in popularity, they came to redefine life and crime in Ireland, making millions for some, while fuelling a rise in addiction, violence and organised crime for many others.