His research and teaching focus on youth crime and cyber-risk, fear of crime, and perceptions of police. He is currently a Principal Investigator (with Rose Ricciardelli, Memorial University) on a Social Sciences and Humanities Research Council funded Insight Development Grant examining youth and cyber-risk in Canada. His first book, co-authored with Wing Hong (Eric) Chui, Responding to Youth Crime in Hong Kong: Penal Elitism, Legitimacy and Citizenship, was published in 2014. His second book, co-edited with Rose Ricciardelli and also with Routledge, Engaging with Ethics in International Criminological Research, has recently been published.