Criminal evidence – Admissibility of evidence. High Court of Justiciary: Refusing an appeal by an appellant against her conviction for possession of a controlled drug on the basis that her detention by police officers was unlawful, and thus evidence of her possession of heroin should not have been allowed, the court held that the officers had reasonable grounds for suspecting that the appellant was involved in a drugs offence: a reasonable person in possession of all the information available to the detaining officers would have suspected criminal behaviour.