His teaching and research interests include Canadian and international criminal law, the law of armed conflict, as well as migrant smuggling and human trafficking. Professor Perrin’s recent book Invisible Chains: Canada’s Underground World of Human Trafficking (Viking Canada, 2010) became a bestseller and was named one of the top books of the year by the Globe and Mail. In 2010, amendments proposed by Professor Perrin to the Criminal Code were adopted by Parliament to enact stiffer penalties for child trafficking (Bill C-268) – the only private member’s bill to become law between 2008 and 2010 and only the fifteenth time since Confederation that the Criminal Code had been amended by a private member’s bill. He has also been honoured by the Governor General of Canada and victims groups for his efforts.