There is no "one-stop shopping" offender typology available that can identify the risk level, targeted treatment protocols, and control levels of the offender groups examined in this special issue: murderers, sex offenders, batterers, violent prisoners, and violent mentally ill offenders, which is why further research establishing the links between offender risk level, offender treatment needs, and offender control requirements is critical. This article provides a "state of the art" discussion of the key issues that must be addressed by policymakers, practitioners, and ultimately, the public, vis-à-vis the design, development, and implementation of typologies for these targeted groups of offenders. This is followed by our assessment of the lessons learned from the great prison classification experiment. We conclude by providing an assessment of new directions in the development of typologies of offenders and the communities in which offenders reside.