The title of this work illustrates the two difficulties which the chosen theme poses, difficulties which arise from the confrontation between collective and individual interests. On the one hand, the criminal process is based on the protection of society; on the other hand, human rights implies respect for all individuals implicated in that process, be they victim, witness or accused. A third difficulty arises in relation to the new influence of European law. While the right to judge has long appeared to be the most obvious indication of national sovereignty, it is now subject to...