This workshop continues the sequence of Economics of Crime workshops in Paris (2009), Bonn (2010), and Torino (2011). The workshop will consist of two keynote lectures - given by Jens Ludwig (University of Chicago) and Ron Clarke (Rutgers University) - and 12 contributed papers. We aim at bringing together researchers to present and discuss their work, allowing for an in-depth interaction between those working on the empirical and theoretical analysis of crime and illegal behavior.