Episode 3

In London, the specialist officers from the Metropolitan Police's Extradition Unit have a difficult case. Can they identify and arrest a man accused of horrific crimes committed during the Gujarat massacre in India in 2002? He is now thought to be working behind the counter of a Hounslow newsagents. When the UK's National Crime Agency seize their biggest ever haul of cocaine, hidden in a lorry full of Argentinian beef, the international hunt for a major British drugs smuggler begins. He is tracked down thanks to the determination of Dutch undercover police. In Leeds, officers go on the hunt for a man accused of people-trafficking offences by the police in Portugal. And why did the 500 euro note disappear? A look at how the authorities are stamping down on criminals' reliance on ready cash.