Krister was a heroin addict for 27 years. Everyone around him, including himself, thought his days were numbered. Today he is drug-free. The reason can be spelled out in a single word: Subutex. But the critics believe that Krister is not drug-free at all, but that he has merely exchanged one drug for another. Marcus Heilig, docent in psychiatry, and Christer Karlsson, chairman of KRIS, also participate.