America's love affair with prescription painkillers has led to a population dependent on opiates. But since a crackdown on their over-prescription, where does this leave the two million Americans who developed a habit for these high-strength painkillers? With the pills now becoming increasingly expensive, vast numbers of Americans have turned to a cheaper opiate: heroin. The drug now claims more lives in the US than gun crime. In Huntington, West Virginia, Louis embeds himself in an Appalachian community that is being devastated and stretched to its limits by widespread heroin use.