The role of the expert witness continues to be a hot topic of discussion. Two recent decisions in the Ontario Superior Court highlighted the controversy that exists regarding the role of the expert witness. CBVs Andrew Cochrane and Carolyn Scott summarized the impact of the Ontario Court of Appeal’s decision rejecting the 2014 trial court judge decision. Included with the article is a summary that was presented to the court by the Advocates’ Society titled, Principles Governing Communications with Testifying Experts.