54 I note that Dr Wong was also at odds with the opinion expressed by Mr Dibona, psychologist. Mr Dibona was not inclined to the view that any of the history given by the offender in their frequent counselling sessions together was based on delusional beliefs. I reject Mr Dibona's opinion in this respect. The significance of Mr Dibona's report is that it shows that the offender has, in recent times, maintained his account of the deceased's flagrant sexual infidelity, together with his belief that on the morning of her death she told him that people were waiting in the backyard to kill him and that he confronted this group who then scattered into the bushes. There is more in similar vein in Mr Dibona's report. In Dr Wong's opinion the fact that the offender continues to believe in the delusions (which characterised his thinking at the time of the killing) is evidence that he continues to suffer from delusional disorder. By contrast, Dr Davies considered that the offender was not currently suffering any form of mental illness, but that he retained memories of the content of his thinking at the time of the killing. Dr Nielssen was somewhat closer to Dr Davies than Dr Wong in this respect.
55 Dr Davies interviewed the offender on 7 November and 4 December 2001. On review the offender presented in a more direct and co-operative manner and did not demonstrate any gross psychiatric signs. This was in contrast to his presentation in December 1999 and January 2000. Dr Davies, in a report dated 4 December 2001, observed:
"When I first saw Mr Lever he continued to demonstrate low grade symptoms suggestive of psychosis but in the last eighteen months these have improved and he does not have any current symptoms of mental illness.
From the point of view of risk on return to the community I note that there were no problems during the two years that Mr Lever was on bail and as his recent violent episodes were contained within an intimate relationship I do not regard his release as likely to pose a significant threat to the community."
56 In oral evidence Dr Davies stressed the usefulness in this case of the offender being subject to a lengthy period of supervision. In evidence Dr Davies was asked to express an opinion about whether the offender's delusional disorder might become manifest again in the context of a future relationship. He responded in these terms:
"It depends what you define as 'significant'. What it means is that you should then put in place strategies to monitor his psychiatric condition long-term. But the problem with risks in this sense, in a risk management situation is that even though he had two or three times the community risk of recurrence, the overall level of risk still remains relatively small. So it depends actually what you mean by 'significant'."
57 Dr Nielssen, in an updated report addressed to the issue of future dangerousness, noted:
"Mr Lever's previous violence has largely been confined to his marriage, which would not predict a risk to the community at large, but may lead to domestic violence in another relationship."
58 Elsewhere in his report Dr Nielssen observed:
"The history of steady employment in the years before the offence, and the support he has received from his family suggests that he will be able to make a reasonable adjustment to life in the community after his release".
59 In the course of his oral evidence Dr Wong was asked what features of the delusional disorder might be expected to be exhibited in the offender's behaviour in the future. He said this:
"Now when Linda was still alive, and she was one of the main objects of the delusional belief, and Mr Lever acted accordingly, in response to his delusions, when she was no longer around, obviously the object of his delusions are no longer there and we would not expect the person to respond to his delusions in any tangible way and the characteristic of this disorder is that the person is able to function quite normally outside of the domains of the influence of his delusions. Well, in that case, he would be functioning quite normally."
60 Dr Wong went on to express the opinion that it was possible that a person suffering from delusional disorder may come to have the scope of the delusions stretch so as to encompass more people within the delusional belief system. He was not able to express the likelihood of this occuring in the present case. Ultimately, he expressed the opinion there was a significant possibility of the offender's delusional belief system spreading.
61 There is some divergence in the views of the psychiatrists who have interviewed the offender over the years since the commission of the subject offence. Neither Dr Davies or Dr Nielssen identifies the offender as posing a significant risk to the community at large upon his ultimate release. The risk, as Dr Wong perceives it, is that the offender may in the future come to include persons, other than the deceased, within the framework of his delusional belief system.