He specialises in criminal law and family law, and has written extensively in these areas. He is co-author (with Neil Morgan and Stanley Yeo) of Criminal Law in Malaysia and Singapore (LexisNexis, 2007), and has edited two books on criminal law: Fundamental Principles of Criminal Law: Cases and Materials (LexisNexis, 2005); and Support for Victims of Crime in Asia (Routledge, 2007).