Based on the proven technology of Multisystemic Therapy (MST), this unique book provides an exemplary approach to empowering communities to reduce youth violence and substance abuse and promote school success. Effective strategies for working with at-risk youth are embedded in a comprehensive framework that enlists the talents and resources of clinicians, human service professionals, neighborhood residents, community organizations, and outside stakeholders. Using an extended case example to illustrate all aspects of implementing MST on a neighborhood-wide scale, the volume covers empirical and clinical foundations, program planning, and strategies for building collaboration with key community players.