This study is one of two in a multi-site RCT for the treatment of opiate addiction. DBT has been shown to be efficacious for the treatment of BPD patients and it has been extended in this study to target addictive behaviors in these patients. The study consists of three treatment parts: weekly individual and group therapy and suboxone maintenance medication. Participants are provided therapy on a weekly basis for one year and suboxone for 2 years. Assessments for tracking outcome are conducted every 4 months.