This work presents a comparative study of the provisions relating to insider dealing under the EC Insider Dealing Directive. The volume begins with a discussion of the rationale for regulating financial services in general and controlling insider dealing and money-laundering in particular. It examines the definition of an insider and of inside information and the various criminal offenses relating to insider dealing. The role of money-laundering is also recognized and the anti-money laundering regime as well as the considerable impact on the financial sector is discussed in detail. The work assesses the efficacy of criminal law in controlling insider dealing and considers the increasing trend to deal with it by means of civil/administrative measures.