This time, Jeremy looks into how authorities are dealing with users and dealers of class A drugs like heroin and cocaine. He speaks to a former undercover policeman who after years of putting dealers behind bars now believes the only way to win the war is the regulation of drugs. Two teenagers tell him how they have been selling drugs since the age of 14 in rural towns and cities - known as the ‘county lines'. And he talks to a gang that says the vast amounts of money they can make is their main draw to dealing.