Ten of the 22 chapters address specific populations—immigrants and refugees, the homeless, the chronically mentally ill, veterans, minority groups of color, women, children and adolescents, older adults, criminal offenders, and substance abusers—outlining their psychopathology, service use, and specific treatment needs. These sections, as well as the overall scope of the book, are essential reading for professionals in many fields who are attempting to formulate or implement mental health policy for these specific populations.