HairKutt (2007)

In this chilling documentary about the power of addiction, three friends take their fourth longtime pal Bryant "HairKutt" Johnson to a remote cabin in the Tennessee woods, hoping to force him to kick his heroin habit. The group must cut short their trip when HairKutt's body begins to fail without the drug, and after rushing him to a hospital, the friends are dismayed to find that he quickly returns to his old ways.