SKA v The Queen

The High Court of Australia considered an appeal by SKA against a conviction for murder. The appellant had been found guilty of murder by a jury in the Supreme Court of Queensland and subsequently appealed to the Court of Appeal of Queensland, which dismissed the appeal. The central dispute concerned the admissibility of certain evidence and the directions given to the jury by the trial judge.

The High Court was required to determine whether the trial judge erred in admitting evidence of the appellant's prior convictions and whether the judge's directions to the jury regarding the use of that evidence were adequate. Specifically, the court had to consider whether the prejudicial effect of the evidence of prior convictions outweighed its probative value, and if the jury was properly instructed on how to consider such evidence, particularly in relation to the issue of propensity.

The High Court allowed the appeal, quashing the conviction and ordering a new trial. The majority of the Court held that the admission of the evidence of prior convictions was an error. They reasoned that the evidence was highly prejudicial and its probative value was limited, particularly in relation to the specific elements of the murder charge. The judges concluded that the directions given to the jury were insufficient to mitigate the prejudicial impact of this evidence, thereby creating a substantial risk that the jury had used the prior convictions as evidence of the appellant's propensity to commit the crime, rather than for a permissible purpose.