Massey v The Queen

The High Court of Australia considered an appeal by the applicant, Massey, against his conviction for murder. The central dispute concerned the admissibility of certain evidence obtained during police investigations.

The High Court was required to determine whether the trial judge had erred in admitting evidence that had been obtained in circumstances where the applicant had been subjected to oppressive conduct by police. Specifically, the Court had to consider the application of the exclusionary rule, which permits the exclusion of evidence obtained in contravention of an accused's rights, even if that evidence is otherwise relevant and admissible.

The Court reasoned that the trial judge had failed to properly apply the exclusionary rule. It held that the oppressive conduct of the police in obtaining the evidence was so significant that its admission would have been unfair to the applicant and would have brought the administration of justice into disrepute. The Court emphasised that the fairness of the trial is paramount and that the court has a discretion to exclude evidence where its prejudicial effect outweighs its probative value, particularly when obtained improperly.

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