relapse and they're at scary mary isom's mers -- mercy. >> no more documenting everything. >> for the better part of a year, "dateline" producers and crews were imbedded with participates from mary's drug court. addict number one, 15-year-old danielle. she's been battle her mom, blowing off classes, and doing drugs for years. >> you have a studious kid and then you have the ones who are out partying. she chose to be the ones who are doing the drugs. >> i never thought i would start doing xanax or drinking cough syrup. >> addict number two is musician bob wright. for more than half his life, he's lived the role and played the part. he's now in the last stage of a three phase drug program. >> watching everybody get high and he's got to say no. that's a big challenge for him. >> my drug of choice was more. it didn't matter what it was. if you had it and we had more of it, we were good. >> cory. >> and finally our third addict, 24-year-old cory. his drug habit got worse as he moved up the restaurant ranks and became a cook. >> he knows the story. he knows the angles. cory knows how to foo