This special issue focuses on organized crime, terrorism and European criminology. In their article on drug trafficking and ethnic minorities in Europe, Letizia Paoli and Peter Reuter show how ethnicity can be transformed from a 'trait' into a product of social position, social ties and opportunity structures. In the second article, Rebecca Surtees describes the patterns of human trafficking from and within countries in South and Eastern Europe. The third article, by Edward Kleemans and Christianne De Poot, concerns a theoretical and empirical gap in the literature on criminal careers. The final article on the psychological processes of Jihadi radicalization, by Andrew Silke, also contributes something new to the literature on 'criminal careers'. The articles in this special issue illustrate how organized crime and terrorism research may succeed in expanding the domain of criminology, both empirically and theoretically. (PsycINFO Database Record (c) 2012 APA, all rights reserved)