they soon had a suspect. police sent several soil samples to lorna dawson for analysis. the scientist compared the soil samples from where the body was found with samples collected from the suspect surroundings. there's a whole range of different methods that can be used to can ties the sole biology and the still a lot of the search to be done to make sure that and when you're competing ah, unknown sample with a known sample. and that the same procedure is carried out, cuz that's absolutely vitally important, that the any analysis is carried out on a, on no one a question sample. you have to use the same procedure for any reference sample, it's going to be compared to it. what about the soil samples in the current murder investigation? could lorna dawson helped to solve the case in the investigation? the disappearance of emma folds. the police sent us a suspect pair of timberland and i was asked to examine them and to determine from the examination what type of soil that was and any vegetation within it. what clues that could give as to where that person had stood or had