Book excerpt: Ethics in Mental Health-Substance Use aims to explore the comprehensive concerns and dilemmas occurring from mental health and substance use problems, and to inform, develop, and educate by sharing and pooling knowledge, and enhancing expertise, in this fast developing region of ethics and ethical care and practice. This volume concentrates on ethical concerns, dilemmas, and concepts specifically interrelated, as a collation of problem(s) that directly or indirectly affect the life of the individual and family. Whilst presenting a balanced view of what is ethically best practice today, this title challenges concepts and stimulates debate, exploring all aspects of the development in treatment, intervention and care responses, and the adoption of research-led best practice.