They are responsible for the fastest growing area of crime, they targeted half of the British population last year but despite this they prove very hard to catch, meet the foreign scam artists who are hitting Britain, from the street scammers of eastern Europe to the west African scammers targeting us online. Channel 4 follows the police as they tackle a crime wave and for the first time we get a proper glimpse at the citizen army that is fighting back, attempting to lure scammers into set up confrontations in a bid to arrange arrests and prevent future scams.