McKell v The Queen

The High Court of Australia considered an appeal by the applicant, McKell, against his conviction for murder. The dispute centred on the admissibility of certain evidence during his trial and the subsequent appeal to the Court of Criminal Appeal of New South Wales.

The primary legal issue before the High Court was whether the trial judge had erred in admitting evidence of the applicant's prior convictions and prior bad character. This involved a determination of the proper application of the rules of evidence, particularly concerning the admissibility of such material when it might prejudice the jury against the accused. The Court also considered whether the Court of Criminal Appeal had correctly applied these principles in dismissing the applicant's appeal.

The High Court analysed the principles governing the admission of evidence of prior convictions and bad character, emphasising the need to balance the probative value of such evidence against its prejudicial effect. The Court affirmed that evidence of prior convictions is generally inadmissible unless it has a specific relevance to a fact in issue in the current proceedings, beyond simply demonstrating a propensity to commit crime. In this instance, the Court found that the evidence admitted had not met the required threshold of relevance and was therefore improperly admitted, leading to a miscarriage of justice.

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