From crypto entrepreneurs in North Korea to major banks in the City of London, money laundering is everywhere. Money laundering is about making illicitly earned cash look like it came from a legitimate source. It’s hard to say exactly, but the United Nations Office on Drugs and Crime estimates that anywhere between $800 billion to $2 trillion of dirty cash is ‘washed’ through the global economy every year. This is the Business of Crime, a new series looking at how different parts of the criminal economy function. In this episode, we’re looking at money laundering - how it's done and why it’s so important for criminals around the world to clean their dirty cash.