Case Management With Drug-Involved Arrestees reports the preliminary findings of a recent study of almost 1,400 arrestees, conducted in two sites, that explored effects of intensive case management delivered for 6 months to drug-involved arrestees released after booking. The findings included significantly reduced drug use in one of the two cities and lowered criminal recidivism in both cities in the study. Case management was no more successful than the other interventions in reducing drug injection-related and risky sexual behaviors implicated in the transmission of HIV, although the investigators do recommend modifications to the case management model that might improve outcomes associated with risk behaviors.