Mental health-substance use is a complex interrelation, with equally complex implications for individuals and their families, health professionals and society. Although its international recognition as an issue of critical importance is growing, clear guidance for professionals on mental health-substance use and its treatment is hard to find. The Mental Health-Substance Use series addresses this need, concentrating on concerns, dilemmas and concepts that impact on the life and well-being of affected individuals and those close to them, and the future direction of practice, education, research, services, interventions, and treatment. Having set the scene with the first book’s Introduction, this second book in the series tackles service development: how to evaluate the current state from a firm knowledge base, plan and manage change to provide better services, and continue monitoring and evaluating them on an ongoing basis. The volumes in this series are designed to challenge concepts and stimulate debate, exploring all aspects of the development in treatment, intervention and care responses, and the adoption of research-led best practice. They are essential reading for mental health and substance use professionals, students and educators