The Director of Public Prosecutions v Maxwell

The Director of Public Prosecutions (DPP) appealed to the High Court of Australia against a decision of the Court of Appeal of the Supreme Court of Queensland, which had allowed an appeal by Mr Maxwell against his conviction for the offence of dangerous driving occasioning death. The central dispute concerned the proper interpretation and application of the defence of automatism in Queensland criminal law.

The High Court was required to determine whether the defence of automatism, as recognised in Queensland, encompassed involuntary actions arising from a "disorder of the mind," and if so, whether the evidence presented by Mr Maxwell in support of this defence was sufficient to raise a question for the jury. Specifically, the court considered the distinction between automatism caused by an internal factor (such as a disease of the mind) and automatism caused by an external factor, and the legal consequences of this distinction for the availability of the defence.

The High Court held that the defence of automatism, as it applies in Queensland, is not limited to involuntary actions caused by external factors. Rather, it can also arise from an involuntary act or omission due to a "disorder of the mind," provided that the disorder is not a "disease of the mind" in the sense that would attract the defence of insanity. The court reasoned that the critical element of automatism is the absence of voluntary control over one's actions, regardless of the cause. In this instance, the court found that the evidence presented by Mr Maxwell, relating to his state of mind at the time of the driving incident, was capable of supporting a finding of automatism and therefore ought to have been left for the jury's consideration.

Consequently, the High Court allowed the DPP's appeal, set aside the order of the Court of Appeal, and remitted the matter to the Court of Appeal to determine the appropriate orders, which may include ordering a new trial.