Ian Marsh is Principal Lecturer in Criminology at Liverpool Hope University and is a widely published textbook author. His recent publications include Theories of Crime (Routledge 2006 - with Gaynor Melville, Keith Morgan, Gareth Norris and Zoe Walkington), Criminal Justice: An Introduction to Philosophies, Theories and Practice (Routledge 2004 - with Gaynor Melville and John Cochrane), Sociology: Making Sense of Society (4th ed, Pearson, 2009), and Crime, Justice and the Media (Routledge 2009 - with Gaynor Melville). Gaynor Melville is Lecturer in Criminology at Liverpool Hope University. She has co-written and contributed to a number of books including Crime, Justice and the Media (Routledge 2009), Theories of Crime (Routledge 2006) and Criminal Justice (Routledge 2004). John Cochrane is Lecturer in History and Criminology at Liverpool John Moores University and contributed to Criminal Justice (Routledge 2004). Keith Morgan is Senior Lecturer in Criminology and Psychology at Liverpool Hope University and contributed to Theories of Crime (Routledge 2006). Gareth Norris is Lecturer in Criminology at Aberystwyth University and contributed to Theories of Crime (Routledge 2006).