La Fontaine v The Queen

In *La Fontaine v The Queen*, the High Court of Australia considered an appeal against a conviction for murder. The appellant, La Fontaine, had been found guilty of murder by a jury in the Supreme Court of New South Wales and sentenced to death. The central dispute revolved around the admissibility of certain evidence and the fairness of the trial proceedings.

The High Court was required to determine whether the trial judge had erred in admitting evidence of the appellant's prior convictions and prior convictions of a co-accused, and whether the summing up to the jury was adequate and fair. Specifically, the court had to consider the principles governing the admission of evidence of prior convictions, particularly when such evidence might be prejudicial to the accused, and whether the judge's directions to the jury sufficiently mitigated any potential prejudice.

The Court held that the admission of evidence of the appellant's prior convictions was a material misdirection, as it was not relevant to any issue in the trial and was highly prejudicial. The Court also found that the admission of the prior convictions of the co-accused, without proper direction, was similarly prejudicial. The reasoning applied was that evidence of prior convictions is generally inadmissible unless it has a direct bearing on a fact in issue in the current proceedings, and its probative value must outweigh its prejudicial effect. The summing up was found to be deficient in adequately directing the jury on the limited use they could make of such evidence, thereby failing to ensure a fair trial.

Consequently, the High Court allowed the appeal, quashed the conviction, and ordered a new trial.