America's heroin trail: A new generation of addicts
America is in the grip of a heroin and prescription-drug epidemic. More Americans - almost 50,000 per year - now die from drugs than from guns or in car accidents.
Correspondent Ian Pannell. Filmed by Darren Conway, edited by James Reevell.
You can watch the Our World documentary: American Addiction this weekend on BBC World and the BBC News Channel.