In Phase I of this R34, the team from the University of California Los Angeles, San Francisco, and Irvine researchers plan to utilize the successful community participatory approaches to refine a gender-sensitive criminogenic needs -focused intervention program, Female Ex-Offender Mentoring in Care (FEM-CARE), with the help of a community advisory board, composed of homeless female offenders (HFOs) and addiction staff; and finalize strategies which will be validated by focus group sessions with the HFOs. In Phase 2, the research team will randomize 130 HFOs participating in one of two residential drug treatment programs to assess the impact of the FEM-CARE or a Health Promotion control program on reduction of drug and alcohol use and recidivism. This study is based upon our team's history of promoting theoretically-based, culturally sensitive nurse-led interventions that are enriched with criminal justice theoretical perspectives, and have resulted in significant reductions in drug and alcohol use among homeless persons, many of whom have had a history of incarceration.