Fully updated fourth edition of Trotter's well-established text on working with involuntary clients. The new edition includes a new chapter on Collaborative Family Work and additional emphasis on trauma informed practice. Includes plentiful case examples and links to practice, from a range of settings including work with people with addictions, young people who refuse to go to school and mental health patients who refuse treatment, as well as examples from criminal justice and child protection. Presents a practical model for evidence-based practice and discusses a range of intervention models and relationships skills. Takes into account up-to-date research evidence throughout.