This monograph explores, through two studies, the major issues and mechanics of adult pre-trial intervention programs for non-addict criminal defendents. Part I draws upon an evaluation of research on pre-trial services which aimed at: (1) evaluating the internal and external validity of each study; (2) evaluating the policy utility of specific studies bearing on given policy instruments; and (3) providing decision makers with an assessed research base for alternative policy actions. The complete results of this study are reported in two volumes referenced in the bibliography. Part II describes the mechanics of the pre-trial intervention design in three communities, based on available documentation and brief on-site visits. The section includes: (1) an overview of the major operating components of all three programs, highlighting both their common and distinctive features; and (2) separate descriptions of the selection, service delivery and termination procedures at each site. The specific programs are presented merely as being illustrative of the intervention design. (Author/SE)