10 Having summed up on the law the trial judge went on to rehearse the submissions of the Crown Prosecutor and counsel for the defence. His Honour reminded the jury about the $17,000 found in the briefcase and continued-
The Crown puts to you there is nothing in the briefcase to in any way differentiate between the different amounts which are said to have come from different people. It was not divided into bundles. There was nothing on the envelopes to relate those amounts of money to what was inside them and the paper bag, to suggest that this was money gifts. The Crown says well why would the accused not have told the police when they found that money, that it was not his money, it was in effect, his late brother's money, or perhaps it was the money of the persons who had given to him for safe keeping. Bearing in mind, as the Crown concedes, that there was certainly no obligation on the accused to say anything when he was asked about the items found in that briefcase. The Crown has submitted to you that when dealing with the two MDA charges, upon which charges the Crown has to prove that it was in possession for supply, that you would look at those general matters, which I have already referred to, the large amount of money, the envelopes with writing on them, which was really not explained and the presence of those resealable plastic bags. As I have already said, the Crown of course does concede, when dealing with the failure of the accused to make any mention of, on his case, who owned the large sum of money in the briefcase. It was certainly no obligation upon him to say anything.
11 It was submitted on appeal that those directions permitted the jury to reason in the way suggested by the Crown Prosecutor in her final address, namely that while the appellant had no obligation to say anything to the police about the money in the briefcase, the explanation offered at trial, that it was not his money but money he was keeping for his brother's wedding, could be discounted by reason of his failure to tell this to the police.
12 In Petty and Maiden v The Queen (1991) 173 CLR 95 it was observed that in a criminal trial it should not be suggested that previous silence about a defence raised at trial provides a basis for inferring that the defence is a new invention or is rendered suspect or unacceptable. See the judgment of Mason CJ, Deane, Toohey and McHugh JJ at 99.
13 The Crown submitted on appeal that the right of silence was not immediately invoked. Rather, at the Spit the appellant had denied knowing the nature of the tablets police found in the car. It seems possible that the difficulty with this submission maybe no more than a matter of terminology, but I would wish to make clear that a suspect's right to silence is not something that needs invocation. It exists. Moreover, I would not regard whatever the appellant may have said at the Spit as affecting in any way his right not to speak about things later found at the house.
14 Then it was submitted that after being cautioned the appellant told the police that the briefcase contained personal papers. The implication was that he had chosen not to exercise his right to silence and fell under an obligation, if he wanted to avoid an adverse inference in due course, to tell the police the source of the money he knew they would find in the briefcase. It was submitted that read in context the Crown Prosecutor's submissions amounted only to a comparison of the appellant's initial version - that the briefcase contained only personal papers - and the version put forward at trial - that it contained wedding presents in cash.
15 I do not accept that by asserting that the briefcase contained just some personal papers the appellant waived his right to silence about the money and its provenance. He did not assume any obligation to inform the police about the source of the money the failure to meet which would entitle the jury to draw any inference adverse to his interests, whether as to the novelty of the version put forward at trial or as to its suspicious nature or unacceptability.