Following over a decade of focus on terrorism and transnational criminality, how have three ‘intermediate capacity’ countries (Denmark, Finland and New Zealand) structured their intelligence and law enforcement inter-organisational relationships to respond to such wicked problems? This article presents the results of case studies regarding Denmark, Finland and New Zealand that examined the inter-organisational arrangements between the countries intelligence and law enforcement agencies. The case studies used publicly available secondary sources from the period 1 January 2007–31 December 2012 to obtain data for analysis. The data was analysed using research that had established the types of inter-organisational relationships organisations can have to determine the relationships occurring in each of the countries. The results of the case studies establish that the three countries are committed to a variety of cooperative, coordinated and collaborative relationships.