The Sicilian and Italian-American mafia, the Napolitan Camorra, the Japanese Yakuza, Chinese triads, Colombian and Mexican drug cartels, Russian mafia… From the north to the south of the planet, organized crime is one of the most characteristic criminal forms of our time, with profound and disquieting repercussions for security, the economy and politics. Going beyond certain cliches and stereotypes perpetuated by films and noir fiction, 'Crimen.org' presents a global study of organized crime by way of a description of its most significant manifestations. A complete study of the most notable criminal groups that arose throughout the 20th century up to the present day, and of the main causes of organized crime: its structural characteristics and principal businesses, and its relationship to politics, terrorism and armed conflict.