Boyle (a Pseudonym) v The Queen

The applicant, Boyle (a pseudonym), appealed to the Court of Appeal of South Australia against convictions for two offences. The appeal concerned the admissibility and use of complaint evidence and the adequacy of the Magistrate's reasons. The applicant argued that the Magistrate had misused inadmissible complaint evidence, that the trial had miscarried due to the wrongful admission or use of out-of-court statements, that the Magistrate's reasons were inadequate, and that the evidence did not prove the offences beyond reasonable doubt.

The central legal issues before the Court of Appeal involved the interpretation and application of section 34M of the *Evidence Act 1929* (SA), which governs complaint evidence in sexual offence cases. Specifically, the court had to determine whether the Magistrate had correctly applied the principles regarding the admissibility of initial complaints and their elaborations, and whether the Magistrate had improperly used complaint evidence as proof of the truth of the allegations or to support findings of distress. The court also considered the extent to which an appellate court should interfere with a trial judge's findings of fact, particularly where those findings are based on the credibility of witnesses.

The Court of Appeal found that the Magistrate had erred in his treatment of complaint evidence. It clarified that section 34M of the *Evidence Act* abolishes the common law rule regarding recent complaints and establishes a statutory regime. The court noted that the Magistrate appeared to have misunderstood the concept of "elaboration" of a complaint, conflating it with "extrapolation," which is not a permissible concept under the Act. Furthermore, the Magistrate had improperly used the content of the complaint to support findings of distress and the truthfulness of the complainant's account, despite acknowledging that complaint evidence is not admitted for its truth. The court emphasised that while complaint evidence can be admitted to inform the jury how an allegation came to light and as evidence of consistency of conduct, it cannot be used as evidence of the truth of what was alleged. The Magistrate's reliance on an "extensive" complaint, which was arguably inadmissible elaboration, and his use of it to support findings of distress and the complainant's honesty, constituted a misuse of the evidence.

The Court of Appeal concluded that the Magistrate's errors in admitting and using complaint evidence, and his inadequate reasoning in relation to inconsistencies in the complainants' evidence, amounted to a miscarriage of justice. The court allowed the appeal, quashed the convictions, and ordered a new trial.