This article looks into the collaborative link needed between drug courts and jails, specifically jail-based treatment programs and the drug courts role as a re-entry mechanism for an offender’s successful reintegration into the community. The jails may constitute the best setting for drug screening and assessment, and for getting those in need of treatment on a recovery track only 7 percent of the jails house wide-ranging drug assessment and treatment programs. For those receiving significant jail time before their release into the community, jails provide an important opportunity to begin intervention through the drug court process. Helping build effective jail-based treatment programs can broaden and strengthen drug courts collaborative foundation among the legal, treatment, and law enforcement communities. Reconnecting the offender with the drug court or re-entry court is necessary to completing the circle of intervention so critical to the participant’s success. The article highlights four existing drug court and jail-based treatment linkages, San Bernardino, California, Uinta County, Wyoming, Los Angeles, California, and Broward County, Florida. Appendix A, references