This chapter describes the key principles of the criminal justice system. These key principles behind the abstract aims of criminal justice include the rule of law, adversarial justice, and restorative justice. The chapter particularly focuses on the rule of law doctrine to illustrate its status as the ultimate authority for democratic systems of justice around the world, but it also reflects on three of its supplementary concepts: an independent judiciary, due process, and human rights. Meanwhile, the traditional adversarial contest in a courtroom between two opposing sides means such hearings can lack impartiality as the role of the judge is limited to ensuring that the rules are followed. The restorative justice principle offers a different dimension, one that prioritises repairing the harms suffered by the injured parties.
