The Prince George's County Adult Reentry Program will serve 750 persons over the life of the program. Program participants will be aged 18 or older, residents of Prince George's County, have been assessed or diagnosed as having a SUD or co-occurring substance use and mental health disorder, have either been sentenced to and serving at least one month in a correctional facility or are on probation or parole and area at risk of being reincarcerated in a correctional facility due to probation or parole violation, if currently incarcerated are within four months of scheduled release to the community, are assessed as being moderate or high criminogenic risk, are not a registered sex offender or an arsonist, and can provide written informed consent. The target population is 80% African American, 14% Hispanic, 1% Other, and 5% Non-Hispanic White. The overwhelming majority of inmates are male. The median age of inmates is 25 years. One third are diagnosed with mental illness and 78% have a substance use disorder. Almost 75% of inmates recidivate. The Prince George's County Department of Corrections and the Maryland Department of Parole and Probation will refer 380 pre-release inmates and 370 persons on home detention to the PGCARP. The projects goals are 1) to increase the capacity for adult reentry program eligible detainees at the Department of Corrections to receive pre-prerelease assessments, treatment, and case planning and management; 2) increase the number of County residents on home detention receiving assessment, treatment, and case planning and management; 3) to decrease participant recidivism through use of evidenced based interventions that address criminogenic risk and needs; 4) to increase training provided to partnering agencies and organizations to deliver evidenced based interventions that address criminogenic risk and needs. The primary outcome is a reduction in the recidivism rate. Secondary outcomes are increases in the proportion of reentering offenders with stable housing, employment, and means of transportation, 12 months post reentry.