Caz v The Queen

The High Court of Australia considered an appeal by the applicant, Caz, against a conviction for murder. The applicant had been found guilty of murder by a jury in the Supreme Court of Victoria and subsequently appealed to the Court of Appeal of Victoria, which dismissed the appeal. The High Court granted special leave to appeal from the decision of the Court of Appeal.

The central legal issue before the High Court was whether the trial judge had erred in law by failing to adequately direct the jury on the defence of provocation. Specifically, the applicant argued that the jury should have been instructed that the question of whether the provocation was sufficient to reduce the charge from murder to manslaughter was a question of fact for them to determine, rather than a question of law for the judge.

The High Court, in a joint judgment, held that the defence of provocation, as codified in Victorian law, requires the jury to consider two elements: first, whether the provocation was such as to cause an ordinary person to lose self-control, and second, whether the accused did in fact lose self-control. While the first element involves an objective standard, the ultimate determination of whether the provocation was sufficient to reduce the offence to manslaughter is a question of fact for the jury. The Court found that the trial judge's directions had not adequately conveyed this to the jury, thereby creating a risk of misdirection.

The High Court allowed the appeal, quashed the conviction for murder, and remitted the matter to the Supreme Court of Victoria for a retrial on the charge of murder.