42 The trial judge was so concerned about this evidence that she raised the matter specifically with counsel for the appellant as follows:
"HER HONOUR: But this is what has been exercising my mind. You notice in the second sentence there [referring to the bench book]. It says "this has been given in evidence because", what is the reason it has been given in evidence?
COUNSEL: Okay. The reason it has been given in evidence your Honour is because it was necessary for me to attack the two witnesses, Ms Loisos and Mr Multari. And by raising their character, I necessarily had to raise my own. And by putting their character in issue, I made character an issue in the trial and I was obliged to put my client's character in as well.
YOUR HONOUR: Why were you obliged to do that?
COUNSEL: Well once character is raised, once I cross-examined the character of a prosecution witness, on character, on previous criminal convictions, I put my own character in issue. That was my understanding of the law your Honour.
HER HONOUR: It was my understanding before the Evidence Act, I'm not sure that that's still the case. It certainly was my understanding before the Evidence Act, but I'm not sure that it's still the case. If you look at the relevant section. I mean the Crown prosecutor would have needed leave before he could have …
COUNSEL: I see. Well what I did.
HER HONOUR: … cross-examined your client as to his character. But anyway I don't want to burden the jury with legal reasons, but
COUNSEL: Yes. I don't think we need to give them a reason your Honour. I simply …
HER HONOUR: Well what is the reason that you put that before the jury the fact that your client wanted to demonstrate his entire history to the ladies and gentlemen?
COUNSEL: Yes. And it was important also to show that he had some knowledge of marijuana. And because he had that knowledge of marijuana, by way of growing some plants in his back yard and knowing what sort of penalties those small amounts of drugs attracted when he went up to the property and saw what a huge operation it was, that's what enabled him to realise that this would attract serious gaol time. It's for that reason your Honour. It was his limited experience of marijuana that enabled him to realise the jeopardy that he was now in when he realised how big this plantation was.
HER HONOUR: The danger with that of course is the jury may well think it's his limited experience with cannabis that made him a precise person to be recruited to the plantation.
COUNSEL: But your Honour has to warn the jury that they must not use that reasoning to get to a verdict of guilty by virtue of the fact that he's committed previous offences.
HER HONOUR: I understand that. I understand that.
COUNSEL: That can in no way be used as evidence against him that he's committed this offence, and that's why we need that direction.
HER HONOUR: No, no but my comment wasn't directed to that. My comment was directed to, if they don't believe your client, they may well think the very reason old Bill asking to go to the plantation, was because he was the sort of person who would do such a thing.
COUNSEL: Well it's a two edged sword. Certainly the edge of the sword I'm relying on is because of his limited experience with smaller plants and the limited penalties he'd attracted in the past, he knew the moment he lay eyes on this huge operation, he knew that this was really serious, and he wanted out then, wanted to have nothing to do with them. So I agree it's a two edged sword, but the edge that I'm relying on is stronger than the other edge."
43 In those circumstances it was necessary for her Honour to sum up to the jury in relation to the admission of the appellant's criminal record. She did this at SU32.9:
"HER HONOUR: Because the evidence of Mr Mouroufas' criminal history was placed before you, it is important that I warn you that you must not reason that because he has some criminal convictions, he must be guilty of this offence simply because you might think he is the sort of person who would be likely to commit this offence. That is a prohibited line of reasoning and my formal direction to you is that you must not allow it to enter into your deliberations. The relevance of that evidence is limited to the circumstances in which Mr Mouroufas came to be on the property and his decision to leave the property. And it was relevant to his evidence that because he had previous experience with cannabis growing on a small scale, he knew that was a large scale operation that that on his evidence was why he decided not to participate.
Of course it is entirely a matter for you whether you accept the evidence, but what you must not do is, as I say, work through a process of reasoning that because he does have convictions in South Australia for cannabis cultivation, that he must be guilty of this offence."
44 Relying upon the decision of Seymour v R [2006] NSWCCA 206 the appellant submitted that even though counsel for the appellant at trial made the decision to place his criminal history before the jury, this decision could not be regarded as rational or reasonable. It could not be regarded as such because the first reason offered by counsel for the appellant involved a misunderstanding of the law. Just because Ms Loisos and Mr Multari were cross-examined as to their previous convictions, did not give a right to the Crown to similarly cross-examine the appellant. For the Crown to have been entitled to cross-examine the appellant about the entirety of his criminal record, leave would have had to have been granted pursuant to s104(2) and s192 of the Evidence Act. It was submitted that in the circumstances of this case, it was most unlikely that leave would have been given to the Crown to so cross-examine. The appellant submitted that the other reason offered for leading the appellant's criminal record was also neither rational nor reasonable. There was no reason for leading evidence in relation to the appellant's assault conviction. The prejudicial effect of the evidence concerning the appellant's previous convictions for cannabis cultivation far outweighed any support this evidence may have given to the appellant's explanation for how he came to arrive at the property and his subsequent departure from it.
45 The appellant's submissions on this ground are correct. The rambling and exculpatory explanation by the appellant of his assault conviction did nothing to assist his case and could only have prejudiced it. The danger inherent in his detailed description of his convictions for cannabis cultivation was cleverly exploited by the Crown in its cross-examination of him. It would not have been lost on the jury that the very activity of cutting up a cannabis plant was that which Ms Loisos and Mr Multari said that they observed the appellant performing while he was at the property. This evidence gave rise to a substantial risk that it would be misused by the jury in a way unfair to the appellant.
46 The problems in leading such evidence were summarised by Hunt AJA in Seymour v R [2006] NSWCCA 206 at [19]:
"19 It is now accepted that a trial may have been unfair, leading to a miscarriage of justice, by reason of the manner in which counsel appearing for the accused conducted his defence: TKWJ v The Queen (2002) 212 CLR 124 at [25], [28], [31], [75], [97], [101], [103]; Ali v The Queen (2005) 214 ALR 1 at [9], [99]; Nudd v The Queen (2006) 225 ALR 161 at [2], [12] - [15], [24] - [25], [62], [81], [151]. These three cases may conveniently be referred to collectively as the recent High Court trilogy (as did Kirby J in Nudd v The Queen at [40]).
20 It is, however, important to note that such a ground of appeal neither requires nor permits an inquiry into the competence of the counsel in question; what must be established is the objective fact that there was a miscarriage of justice as a result of counsel's conduct, in the sense that there has been a loss of a chance of acquittal which was fairly open to the accused. … An appellant carries a heavy burden: R v Miletic (1977) 1 VR 593 at 597 (cited by McHugh J in TKWJ v The Queen at [74]).
21 Relevant to the existence of a miscarriage of justice in the particular trial are the issues of whether the conduct of counsel represented a legitimate choice a competent counsel could fairly make in the circumstances of that trial and whether, viewed objectively, it was a rational tactical decision in the particular forensic situation in which it was made. When that situation is examined, issues such as the forensic advantage which may have been sought and possible prejudice which may have been caused by counsel's conduct are relevant but not necessarily decisive considerations.
…
26 What must therefore be examined in this case is what counsel who appeared for the appellant at the trial did, and whether there could be a rational (or reasonable) basis for what he did.
27 The specific conduct of the appellant's counsel identified as causing the trial to be unfair was the introduction of his criminal history into evidence. This introduction was deliberate, as the appellant gave written instructions on the day the first trial commenced authorising his legal representatives to raise the issue of character and to introduce his criminal record into evidence. The document is obviously the work of his legal representatives, and it may safely be assumed that it was preceded by advice to the appellant that such a course was in his best interests. It has not been suggested that the appellant had himself sought to have the issue raised.
28 The proposed course of action was raised before the Crown case was opened at the first trial. The Crown prosecutor informed the judge that he would be opening the conversation when the complainant pleaded to be let go, to which the appellant responded "I just got out of gaol five days ago, you'll dog me into the cops" (more fully described in para [9] supra). He said that counsel appearing for the appellant was aware of that statement and "is happy for that evidence to be given". The judge asked counsel whether that was so, and counsel affirmed what had been said, adding: "This is one of those cases in which we will admit the prior record". He said it was relevant to the defence. The Crown prosecutor proceeded to open his case - that the complainant was a prostitute, that she had accompanied the two men to the apartment at Warwick Farm, the events of which she would give evidence, including the promise not to tell and the appellant's response to it."