To develop model principles for the three demonstration programs, repeat offender programs in five jurisdictions throughout the Nation were compared for the problems they encountered and the solutions they implemented. Conclusions were drawn as to the most efficient and effective means of developing, operating, and maintaining repeat offender programs. Although the three demonstration sites developed programs tailored to each of their jurisdictions, three design principles were followed. The first principle, internal integration, requires the involvement of agency members outside of any specialized repeat-offender unit in program development and operations. The second principle, horizontal integration, involves all law enforcement agencies in a metropolitan area in the repeat-offender program. The third principle, vertical integration, involves the prosecutor in target selection and tactical operations. Implications drawn from the demonstration programs pertain to program development, targeting, prearrest and postarrest operations, and probation and parole operations. Chapter notes.