Gardiner v The Queen

In *Gardiner v The Queen*, the High Court of Australia considered an appeal by the applicant, Gardiner, against his conviction for murder. The dispute centred on the admissibility of certain evidence during his trial.

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 determining whether the probative value of this evidence outweighed its prejudicial effect, and whether it was relevant to establishing the applicant's guilt of the offence charged.

The Court reasoned that the admission of evidence of prior convictions and bad character is generally prohibited unless it possesses a specific relevance to the offence being tried, beyond merely suggesting a propensity to commit crime. Gageler and Edelman JJ found that the evidence in question did not meet this threshold of relevance and was therefore improperly admitted. The Court held that the prejudicial effect of this evidence was substantial and likely to have unfairly influenced the jury's decision.

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