The second edition of an Introduction to Transnational Criminal Law examines the international instruments that oblige states to criminalise certain activities of a harmful cross border nature or effect, and take a number of procedural steps against these criminals in order to enable cooperation with other states in the suppression of these crimes. The criminological and conceptual discussion that kicks off the new edition explores in greater detail the expansion of the type of international instrument used from multilateral treaty to soft law recommendations and Security Council Resolutions. Attention is then focussed on an enlarged range of offences including piracy, modern slavery, migrant smuggling, drug trafficking, terrorism, transnational organised crime, corruption, money laundering, cybercrime, environmental crimes, weapons trafficking, trafficking in cultural property, and a range of emerging crimes including intellectual property offences. The book then turns to the requirements in the governing international instruments to establish a broad territorial and extraterritorial jurisdiction over these crimes. The remainder of the book engages in a more detailed examination of the enforcement of this jurisdiction through police to police cooperation in the exchange of information as well as more direct forms, formal legal assistance between cooperating criminal justice systems with a specific discussion of asset recovery, and finishes with a full discussion of the difficulties of extraditing the transnational criminal. The final part of the book looks at the implementation of these laws in practice and the institutions that have been developed to implement them.