Citation: REGINA v William Harold MATHESON [2006] NSWSC 332
Court: Supreme Court of New South Wales
Date: 28 April 2006
Judge(s): Mathews AJ
Background
The offender, a musician in his early twenties, was convicted by jury of the murder of an eighteen-year-old woman with whom he had developed an intense and obsessive attachment. The two had known each other for several years through a family connection, and their relationship had become increasingly close. When the victim became engaged to another man and ended contact with the offender, his behaviour escalated into stalking.
The victim disappeared on the evening of 24 November 2003 after being seen with the offender near her home. Her body was discovered on 10 January 2004 inside a large cricket bag in a storage room at a nearby apartment block. Cable ties around her neck indicated she had been strangled. The cricket bag was traced to a purchase made by the offender two days before the killing.
Following the discovery of the body, the offender was admitted to a psychiatric unit in a state of acute distress and was subsequently diagnosed with possible schizophrenia and schizotypal personality disorder accompanied by depression. He was kept on medication throughout his time in custody and remained in protection within the prison system.
Legal Issues
- What was the appropriate head sentence and non-parole period for a murder of this nature?
- How should the offender's mental illness be weighed in the sentencing exercise?
- Did the circumstances of the offence and the offender's personal situation justify a departure from the standard ratio between the non-parole period and the total term ("special circumstances")?
Decision
Mathews AJ found the objective seriousness of the killing to be above the mid-range for murder. The offence involved premeditation (evidenced by the purchase of the cricket bag two days prior), deliberate concealment of the body, and prolonged deception of investigators. The victim was a vulnerable young woman whose life, including a promising career at Disney and a planned future with her fiancé, was cut short in a brutal fashion.
On the offender's personal circumstances, her Honour accepted that the offender was of prior good character with no criminal history and was twenty-three years old at the time of the offence. His mental disorder was found to have little direct causal connection to the killing itself. However, it remained relevant to the broader sentencing process, particularly regarding risk assessment, ongoing treatment needs, and the harshness of imprisonment for a person in his condition.
The court accepted a mid-range assessment of the offender's risk of reoffending, as provided by the psychiatric evidence. Her Honour held that the offender's ongoing need for supervised medication constituted "special circumstances" under the sentencing legislation, warranting a longer than usual balance of term after the non-parole period. This would allow his treatment and medication to be supervised following his eventual release.
Balancing the gravity of the offence against the personal mitigating factors, the court arrived at a non-parole period of eighteen years and a total sentence of twenty-seven years.
Orders Made
- Non-parole period of eighteen years, commencing 19 May 2004 and expiring 18 May 2022.
- Balance of term of nine years, expiring 18 May 2031.
- Total sentence of twenty-seven years imprisonment.
Key Takeaways
- The Supreme Court treated this murder as above the mid-range of objective seriousness, citing premeditation evidenced by the pre-purchase of a concealment bag and sustained deception of police after the killing.
- Where a psychiatric condition has limited causal connection to the offence itself, it may nonetheless remain relevant to sentencing by informing risk assessment and identifying the need for continuing post-release supervision and treatment.
- A diagnosed mental illness requiring ongoing medication can constitute "special circumstances" under the Crimes (Sentencing Procedure) Act 1999, justifying a longer balance of term to allow supervised treatment in the community after release.
- Prior good character and youth at the time of the offence are mitigating factors that bear on the appropriate non-parole period, even where the objective seriousness of the offence is high.
- Conditions of imprisonment, including placement in protection with severely restricted movement, are matters a sentencing court may take into account as factors that increase the harshness of custodial punishment for a particular offender.
Legislation and Cases Referenced
Legislation:
- Crimes (Sentencing Procedure) Act 1999 (NSW)
Cases cited: None cited in the provided text.