Résumé : This paper presents the result of a foresight research on the Belgian penal justice system. The purpose and method of this study are discussed and compared with other foresight exercises. This study’s distinctive features are the exploration of three levels (professions, organizations, and policy) and the use of a participatory method that enables interaction and learning. Summary results, in the form of scenarios, are presented for one organization (the public prosecutor’s office) and for the system as a whole. While expressing some of the issues and challenges facing the Belgian judicial system, they also show the purpose and potential of this kind of foresight study for policy and strategy exploration.