Research Plan: Participants will be randomized to one of three conditions: MI-CBT, MI-CBT+CC or an enhanced treatment as usual (E-TAU) control condition with follow-up interviews targeting violence and substance use outcomes at 3, 6 and 12-months. The MI-CBT intervention involves six individual sessions delivered during the acute SUD treatment phase, combines Motivational Interviewing (MI) and CBT approaches targeting violence and substance use, and has been developed, piloted and refined by the investigators. The MI-CBT+CC intervention includes acute phase MI-CBT plus weekly telephone sessions for an additional 3-month period, and is designed to address both post-treatment violence and substance use through facilitating SUD remission and use of violence prevention skills. The MI-CBT+CC intervention is adapted from a continuing care intervention shown to help consolidate and maintain gains made in treatment.