Abstract: This book presents adaptations of the therapeutic community (TC) model and method for special populations of substance abusers, and implementation in a variety of institutions and human service settings. Included are pregnant adult addicts and their children, adolescents, prison inmates and parolees, the homeless, and chronically ill clients in methadone treatment. The settings include community residence and transitional housing facilities, state prisons, county jails, homeless shelters, mental hospitals, inpatient wards and outpatient clinics, as well as community based treatment programs.