McBride v the Queen

The High Court of Australia considered an appeal by McBride against a conviction for murder. The appellant had been found guilty of the murder of his wife and sentenced to death. The central dispute revolved around the admissibility of certain evidence obtained from the appellant and the proper application of the law relating to self-defence.

The High Court was required to determine whether the trial judge had erred in admitting evidence obtained from the appellant under circumstances that the defence argued amounted to an unlawful search and seizure. Furthermore, the Court had to consider whether the jury directions on the issue of self-defence were adequate and correctly reflected the relevant legal principles, particularly concerning the appellant's belief as to the necessity of using force.

The Court held that the evidence in question had been unlawfully obtained and should not have been admitted at trial. Barwick C.J., with whom McTiernan and Taylor JJ agreed, reasoned that the common law of Australia did not permit the admission of evidence obtained in contravention of fundamental rights, even if it was relevant. The Court also found that the directions on self-defence were insufficient, failing to adequately explain that the jury must acquit if they found the appellant genuinely believed he was acting in self-defence, even if that belief was mistaken.

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