HJS v The Queen

In *HJS v The Queen*, the High Court of Australia considered an appeal by HJS against a conviction for a sexual offence. The central dispute concerned the admissibility of certain evidence and the fairness of the trial process.

The High Court was required to determine whether the trial judge erred in admitting evidence that HJS had previously been acquitted of a similar offence. This involved considering the principles governing the admission of evidence of prior acquittals and the potential for such evidence to prejudice the jury against the accused. The Court also had to assess whether the admission of this evidence, if it was wrongly admitted, rendered the trial unfair.

The Court held that evidence of a prior acquittal is generally inadmissible because it carries a significant risk of prejudice. An acquittal signifies that the prosecution failed to prove guilt beyond a reasonable doubt, and admitting evidence of it could lead a jury to infer that the accused is a person of bad character or that the acquittal was a mistake. The Court reasoned that the probative value of such evidence is almost always outweighed by its prejudicial effect. Consequently, the admission of the evidence of prior acquittal was found to be an error.

Given the prejudicial nature of the wrongly admitted evidence, the High Court concluded that the trial had been unfair. The appeal was allowed, the conviction was quashed, and a new trial was ordered.