23 Therefore, if that was accepted and what was said to the police was untrue, it might be found to be a deliberate lie, and it would certainly relate to a generally material issue that the appellant had a sexual interest in and was engaging in sexual relations with his stepson, whose evidence that that was so might, by the telling of the lie, be generally corroborated, although the telling of the lie could not provide evidence directly probative of the guilt of the appellant of any of the offences specifically charged as having been committed against the stepson, bearing in mind that the appellant was convicted of two offences of indecently dealing with his stepson by masturbating him. Of course, if the lie was to be proved to be such, the jury would have to accept as true the evidence of the second complainant that the appellant confessed to him that he was having sexual relations with his stepson.