This study on organized crime in the Netherlands was prepared for the Commission of Inquiry of the Dutch Parliament that made an investigation into the regulation and use of undercover policing. It not only contains an analysis of the contemporary manifestations of traditional organized crime, but also answers the question whether organized crime has already penetrated legitimate sectors of the economy or not. In addition, special attention is paid to the role of the liberal professions and the banking system, and to the use of counter-strategies by criminal groups (corruption, intimidation, violence, disinformation, and so on).