The difference between the system of criminal procedure in common law countries and that in civil law countries is often described in terms of an adversary or accusatory, as opposed to a non-adversary, investigatory, or inquisitorial system of procedure.1 In the adversary system the proceedings are seen as a conflict between two parties with opposing roles, who in principle are on an equal footing. The parties can determine the limits of their contest between themselves. In principle, the role of the judge is a passive one; he ensures that the procedural rules are observed by all parties and decides on the outcome of the conflict. In this system the accused cannot be interrogated as such but he can be questioned as a witness, although only if he so desires. In the continental inquisitorial system, on the other hand, the trial is seen as an ‘official and thorough inquiry’ 2 into whether an offence has been committed and if so which sanctions should be imposed. The notion of ‘objective truth’ is central to this system and as a consequence the ‘parties’ cannot limit the fact-finding by mutual consent. The accused can be interrogated, even if he does not want to be.