In May 2012, a former research assistant contacted the Montréal police about an interview he had conducted with Luka Magnotta for the SSHRC-funded research project Sex Work and Intimacy: Escorts and their Clients four years previously. That call ultimately resulted in the Parent and Bruckert v R and Magnotta case. Now, a decade later, we are positioned to reflect on the collective lessons learned (and lost) from the case. In this paper, we provide a lay of the Canadian confidentiality landscape before teasing out ten lessons from Parent c R. To do so, we draw on personal archives, survey results from sixty researchers, twelve key informant interviews with qualitative sociolegal and criminology researchers, and documentary analysis of university research policies. The lessons, which range from the clichéd, to the practical, to the frustrating, have implications for the individual work of Canadian researchers and for the collective work of academic institutions.