The offender
18The offender was born in 1963. He was aged 47 at the time of the offence and is now 50.
19He has a criminal history in three states. There are many convictions and they include assaults, including assault occasioning actual bodily harm and assault with intent to prevent apprehension; resisting police; possession of drugs; malicious wounding; damaging property; breaching domestic violence orders; break, enter and steal; larceny; and having custody of goods suspected to be stolen. A lot of these matters occurred in the early to mid 1990's. The last entry is for assault in 2010.
20He has been imprisoned on half-a-dozen occasions. The longest period of imprisonment was for a period of 2 years with a non-parole period of 1 year for two malicious wounding offences in 1992. Those offences involved the offender producing a knife and using it on two innocent victims, lacerating the throat of one and stabbing the other in the back.
21There was an assault occasioning bodily harm for which the offender was sentenced to 12 months gaol in Queensland in 1996. He told Dr Westmore that the victim was a man who led a youth group in which his then 11-year-old stepson was involved. He suspected this man was molesting children. He told Dr Westmore that one day when this man came around to the home, he "beat the shit out of him".
22The offender was born in Victoria and lived his early life there. He described his childhood as "reasonably happy until the incidents as a teenager". This was a reference to instances of sexual molestation, or attempts of the same, by a priest at a Catholic secondary school and by a man in a railway station toilet.
23His parents separated when he was aged about 14 and he stayed with his mother. After leaving school he trained as a motor mechanic before changing to an electronics traineeship and became a qualified radio technician. He later resumed his motor mechanic apprenticeship and completed it. His employment was mostly as a mechanic and in electronics.
24He came to New South Wales to look for work in about 1990 and while working in Cessnock he met his future wife, Sue. She had two sons from a previous relationship. He brought up her youngest son as his own. They had a son together who is now aged 21.
25While in custody in 1993 the offender was diagnosed with what is now described as bipolar disorder type one. This was the subject of disputed evidence in the trial. I prefer the reasoning of Dr Westmore who said, in effect, that with hindsight this was likely to have been a drug-induced psychosis, given that there was evidence of drug use at the time and there was no evidence of any ongoing symptoms when abstinent from drugs.
26The offender was injured in motor vehicles accidents in 1998 and 2010. The records do not state that the offender sustained any significant enduring brain injury as a result. He experienced depression but there were other explanations for that. He returned to work after the accident in 1998, albeit not in the fields in which he was skilled. He worked at a poultry factory in Toowoomba and as a furniture removalist. The family returned to the Hunter Valley in about 2003. He worked intermittently from that time and also acted as carer for his wife who had suffered motor vehicle collision injuries herself. She later developed cancer and has since passed away.
27At the time of the offence the offender was sharing a flat with his older stepson. He was in receipt of a Newstart allowance from Centrelink.
28The offender has a history of alcohol use at levels that are difficult to determine. He told the jury that he drank alcohol once a week. It seems that, at times, he has been a heavy drinker according to a description given in a statement by his late wife.
29The offender claimed in his evidence before the jury that he had little involvement with illegal drugs. He said that he "never had a speed habit", but had tried it once or twice but didn't like it; he had never taken heroin; and he had only tried cannabis once or twice and didn't like it either.
30There was an incident in 2012 while the offender was on remand that resulted in him sustaining a severe head injury. He had a fall for reasons he cannot recall on 30 July 2012. He suffered a fractured skull and an intracranial lesion.
31When he interviewed the offender in March 2013, Dr Nielssen detected some signs of injury to the frontal lobes of the brain and indicators of significant impairment of cognitive function from the offender's mental state examination. He described the offender as being slow in his responses; he had difficulty switching to new topics; and a test administered during the interview required some effort to answer simple questions.
32However, when he was interviewed by Dr Westmore on 26 August 2013 he was found to be alert and attentive; he was neat, tidy, pleasant and co-operative in presentation; he maintained good eye-contact and spoke spontaneously and expansively; his mood and affect, whilst restricted, were appropriate; there was some mood reactivity but he did not present as depressed; and there were no psychotic symptoms displayed. Elsewhere in his report, Dr Westmore said that there did not appear to be any overt or gross long term cognitive deficits arising from the 2012 head injury.
33Dr Westmore's opinion was that "you would expect that cognitive problems arising from the internal injury would improve over a period of two years, up to two years following the injury". A comparison of the mental state examinations by the two experts in March and then August 2013 tends to support that view.
34The offender told Dr Westmore that he is currently prescribed the antidepressant, Avanza, and he also takes Panadol Osteo as required. Mr Cavanagh, counsel for the offender, told me that his instructions were that the current medications were Avanza, Serapax and Codeine. (The pain medications are likely required in relation to a cervical spine injury the offender sustained in one of the motor accidents.) Mr Cavanagh also informed me that the offender is being held in a prison hospital because of his mental condition.
35Preferring, as I do, Dr Westmore's evaluation over that of Dr Nielssen, I am not satisfied that there was any mental condition that had a causative relationship with the killing of Mr Griffin on 3 October 2011. The submissions in support of finding that there was such a relationship in part referred to the frenzied nature of the attack. I accept that this is a pointer in that direction, but there can be other reasons for it. To my mind it is explicable because of the extreme views held by the offender about people he thinks are paedophiles.
36It was also submitted that because of his mental condition the offender is an inappropriate person to make an example of to others. In other words, general deterrence should not play a role in sentencing. I am not persuaded of that. I will reduce the emphasis I place on this factor because, whilst the situation is not entirely clear, it is obvious enough that something is not quite right with the offender mentally. However, the extent to which general deterrence is less significant is modest.
37Another submission made in the context of the offender's mental condition is that he would experience more onerous custodial conditions. In my view, the evidence is insufficient to support such a finding.