Background
Michael Donald Webster was charged with the murder of Daryl Keith Driscoll, predatory driving, and dangerous driving while being pursued by police—all occurring on 7 December 2024 in the Iluka area of New South Wales. On that date, Webster stabbed Driscoll multiple times at Driscoll’s home, killing him. Webster then drove approximately 78 kilometres in a high-speed pursuit, engaging in dangerous driving including an extended campaign of predatory driving against a family (the Coles) on the Pacific Highway before being apprehended near Woodburn.
Both the Crown and defence agreed that Webster suffered from schizophrenia and that the evidence established a defence of mental health impairment under the Mental Health and Cognitive Impairment Forensic Provisions Act 2020 (NSW). The case proceeded as a judge-alone trial before Justice Sirtes, with the parties presenting evidence of Webster’s psychiatric condition and seeking a finding that he was not criminally responsible.
The Court’s Holding
The court returned a special verdict of “act proven but not criminally responsible” on all three counts. The court was satisfied that Webster’s acts—stabbing Driscoll and engaging in the dangerous driving—were physically proven beyond reasonable doubt. However, the court found that at the time of those acts, Webster was suffering from schizophrenia with paranoid delusions so severe that he did not know the act was wrong in the legal sense because he could not reason with moderate sense and composure about it.
Webster suffered acute psychotic symptoms including command auditory hallucinations and complex delusions that World War Three had begun, that China was invading Australia through the Clarence River area, and that Chinese operatives had infiltrated the community and infiltrated authorities. He believed Driscoll was complicit in this conspiracy—”paid by China”—and that killing him was a patriotic act to protect Australia and his family. His delusional system was reinforced by command hallucinations that guided his actions.
Key Takeaways
- A defendant may be not criminally responsible for serious offences, including murder, if mental health impairment deprived him of knowledge that the act was wrong at the time of commission.
- Schizophrenia with paranoid delusions and command auditory hallucinations can satisfy the mental health impairment defence even where the defendant’s acts were violent and deliberate.
- Under s 31 of the Mental Health and Cognitive Impairment Forensic Provisions Act 2020, where Crown and defence agree on the defence, the court conducts an “evidentiary enquiry”—not a trial—and may enter a special verdict without requiring jury determination.
- The court must prove the physical elements of the offence (here, stabbing causing death) beyond reasonable doubt, but the mental health defence is determined on the balance of probabilities.
Why It Matters
This case demonstrates how severe mental illness—specifically schizophrenia with delusional content—can negate criminal responsibility even for grave violent offences when the defendant’s delusional system prevents rational understanding of the wrongfulness of his acts. Webster’s belief that he was engaged in patriotic defence against a foreign invasion, reinforced by command hallucinations, meant he could not reason with moderate sense and composure that stabbing an innocent neighbour was wrong, satisfying the legal test for mental health impairment.
The judgment also illustrates the procedural framework under New South Wales’s modern mental health legislation, which allows expedited resolution where both parties agree on the evidence of impairment, avoiding a prolonged trial while ensuring the court independently assesses psychiatric evidence before entering the special verdict. The decision acknowledges both the serious harm to the victim’s family and the medical reality of Webster’s condition, resulting in his status as a “forensic patient” subject to mental health detention and review rather than criminal imprisonment.