Isherwood v The Queen

In *Isherwood v The Queen*, the appellant, Isherwood, was convicted of murder in the Supreme Court of Queensland. The appeal concerned the admissibility of certain evidence and the fairness of the trial process.

The central legal issues before the High Court of Australia were whether the trial judge had erred in admitting evidence obtained in breach of the appellant's rights, and whether the cumulative effect of certain directions and rulings by the trial judge had resulted in an unfair trial, thereby occasioning a miscarriage of justice.

The High Court considered the principles governing the admission of evidence obtained in contravention of legal rights, particularly in light of section 138 of the *Evidence Act 1995* (Cth) (which applies in Queensland). The Court examined whether the probative value of the evidence outweighed the impropriety of its admission and whether the trial judge had adequately considered the discretion to exclude such evidence. Furthermore, the Court assessed whether the summing-up to the jury, including directions on self-defence and the burden of proof, and other rulings made during the trial, collectively created a substantial risk that the jury might have convicted the appellant on grounds other than those established by the prosecution beyond reasonable doubt.

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