32 The trial judge's summing up dealt with the matter thus :-
Effectively, what has been put is now why would this young man make the allegations he has? A direction I want to put to you and to you quite emphatically is this. That is a reasonable argument to be put to you and, indeed, it would be quite unrealistic to think that you would not yourselves, as members of the community, think about that. You are perfectly entitled to do that , you are perfectly entitled to think about, now why would this young man make the allegations, just as much as you would be entitled to think about, now why would this accused deny them? It would be defying commonsense to think that those considerations would not cross your mind.
But having raised that matter, what I emphatically want to stress to you and reiterate to you is that it is not for the accused to prove any motive on the part of (the complainant). As I have said earlier to you, there is no onus on the accused to prove anything whatsoever in this trial
33 Applying the distinction outlined by Hunt CJ at CL in Uhrig between cases where no motive arises on the evidence and cases where a motive is suggested, the majority of the Court (Priestley JA and Sperling J, Cole JA dissenting) held that, in a case falling into the latter category, the trial judge should have directed the jury that if they rejected the motive put forward by the accused, that did not justify acceptance of the complainant as a witness of truth. The absence of that direction was sufficient to uphold the ground of appeal.
34 In R v AH (1997) 98 A Crim R 71, the Crown Prosecutor asked the jury to consider what reason the complainant had for lying and the trial judge repeated the submission in the following terms :-
He does not have to prove anything. The Crown has to prove that he did it, and the Crown seeks to prove its case, substantially speaking, by evidence of [T]. That is she is the hub of the case and by the other evidence which is relied on by ex parte [this would appear to be a typographical error in a transcript of the summing up and should read "x party"] either to support or to detract from her. But the big decision for you is going to be whether you accept [T].
……………………………………………………..
She points out that there are no reasons to suggest why [T] should make up a story of this sort, and she puts to you that [T's] account of what happened is believable and that her demeanour, particularly under cross-examination, and her reactions when it was put to her that she was not telling the truth were all very convincing and have a ring of truth…It is a matter for you as to whether you think that sort of response and her demeanour throughout convinced you that she was a truthful girl or whether you would doubt her.
…………………………………………………………………..
She is a witness who is brought to you, whether she wants to be here or not, by the Crown, and the Crown Prosecutor says to you - and if she were why would she. Rather she puts the rhetorical question there: why would she make up a story that is going to have these effects on her, as well as her uncle with whom she is on good terms.
35 Ireland J (with whom Hunt CJ at CL and Levine J agreed) referred to Uhrig and went on to say at 77 :-
Here no direct evidence of a motive to lie was presented, and none could be inferred from the evidence given. Thus, the rhetorical question "Why should the complainant lie?" ought not have been put by the Crown to the jury.
Furthermore, his Honour's failure to qualify the Crown's submissions in his summing up, and indeed his repetition of the proscribed question, would have reinforced any illegitimate speculation on the jury's part, initiated by the Crown's submissions, as to the probability of the witness telling the truth. The question and its repetition in this way by his Honour would have considerably diluted his earlier remarks in his summing up to the jury that the appellant did not have to prove anything and distracted the jury's focus from the prime necessity of the Crown to prove its case beyond reasonable doubt. In the circumstances of the case, his Honour's repetition of the rhetorical question "why should the complainant lie?" led to a miscarriage of justice. This ground of appeal is therefore upheld, notwithstanding that no point was taken at trial ( Regina v Abusafiah (1991) 24 NSWLR 531 at 536).
36 This line of authority was considered by the High Court in Palmer v The Queen (1998) 193 CLR 1. At the trial of the accused, his counsel had cross-examined the complainant in order to suggest that her evidence was "some sort of payback" for something the accused had done to her. The cross examination of the accused began with the question "there is absolutely nothing about your behaviour towards [L] in the past … that would account for her making such an allegation against you?" A following series of questions explored this topic further with the accused. At the very end of the cross-examination, the question was repeated in slightly different terms.
37 After noting that cross-examination is permissible and evidence is admissible to establish that a complainant has a motive to make false allegations, referring with approval to Hunt CJ at CL in Uhrig, the majority judgment on this ground (Brennan CJ, Gaudron and Gummow JJ.) said at 7 :-
the fact that an accused has no knowledge of any fact from which a motive of the kind imputed to a complainant in cross-examination might be inferred is generally irrelevant. In general, an accused's lack of knowledge simply means that his evidence cannot assist in determining whether the complainant has a motive to lie, …………
…. to ask an accused the question "why would the complainant lie ?" is to invite the jury to accept the complainant's evidence unless some positive answer to that question is given by the accused.
38 The majority then referred to F and to Sperling J's judgment in E, in particular his Honour's analysis of the reasons for prohibiting cross-examination of an accused as to a witness' motive to lie. As to Sperling J's observation that "the effect of the question is to reverse the onus of proof [in that] the question implies that, unless the jury is satisfied that the complainant is a liar, they should accept the complainant's evidence and convict.", the majority said at 8-9 :-
The third observation may overstate the effect of the question in a particular case, especially if the trial judge gives the jury a direction to the contrary. A firm and clear direction from the trial judge may prevent the impropriety of asking the question from causing justice to miscarry. Nevertheless, as the question is irrelevant to any issue in that case, it ought not be asked.