Professor Drummer discusses the 2009 wrongful conviction in the Canadian Bloomfield case, during which mistaken forensic evidence was relied upon. In response to Bloomfield’s release, the Ontarian government released a review into hair evidence, in which Prof Drummer was one of two expert forensic medical witnesses. Methods, collection protocols, etc. were reviewed in regards to testing for drugs in the hair of children. Drummer also discusses newfound reluctance to rely on solely hair evidence and methods of contamination.