" Ladies and gentlemen, the last direction on law I have to give to you is this: it relates to lies and in this case you heard Mr Mactaggart refer to the fact that the accused, he said, had lied in his account of the incidents that happened and his evidence in this court, and particularly Mr Mactaggart says he lied in relation to the injury to the deceased woman near her vagina, the groin I think Mr Mactaggart referred to it as.
The accused said he didn't stab her, the knife was always in his bag, and Mr Mactaggart says they are deliberate lies. Normally a lie is admissible in evidence if you find there is a lie which affects the credit of a witness. If you are satisfied the accused has lied you may take that into account in determining whether you think he is generally a truthful person, but here the prosecution says you can go further than that. This lie, or series of lies, about this indicate he is really guilty; he was trying to cover up his guilt. That's what they say.
You must consider this submission very carefully before you accept it. There are a number of matters which you must be satisfied about before you can use lies as evidence of a person's guilt of the offence charged, or any alternative offence. First, you must be satisfied he did lie. That means the statement was false and he knew it was false. It's not enough that he may have been confused or forgotten something. Secondly, the lie must be connected with the charge itself.
The Crown would say obviously they are both met here. Some people, for example, may be a bit loose in their talk about things but that wouldn't mean they are guilty of a criminal offence. That's not this situation, as the crown puts it. You must be satisfied that in telling a lie the accused had some knowledge that it was important in the offence. He knew that if he told the truth it would implicate him in the offence. In other words, the crown says, it is important all right because he knew that if he agreed that he'd taken the knife in there and used it, it would most certainly implicate him in a way which the crown says constitutes wilful murder.
In other words, you have to be satisfied the accused was lying because of a realisation of guilt, and here the crown points to what it submits are lies in the accused's account of the main acts of the offence itself. So they say, if he's lying about that it suggests that he was lying because he was trying to cover up some material matter connecting him with the offence. But you must bear in mind a person may be telling a lie for a reason apart from a realisation of guilt. A person may panic, may get carried away, may tell a story for some other reason. If you accept that a lie is explained by a reason such as this then it's not evidence that he was in any way guilty.
So for a lie to amount to an admission of guilt the only reasonable inference from the circumstances in which it was told must be that the accused lied because he knew that if he told the truth he would be found guilty. Such an inference could be the only reasonable one to be drawn only where the lie related to something which directly linked the accused with the crime charged, and it would be a rare case in which it would be permissible to infer beyond reasonable doubt that the accused, by telling a lie, was confessing his guilt."