This volume presents a practical demonstration of the relevance of Carl Schmitt’s thought to parapolitical studies, arguing that his constitutional theory is the one best suited to investing the ‘deep state’ with intellectual and doctrinal coherence. Critiquing Schmitt’s work from a variety of intellectual perspectives, the chapters discuss current parapolitical reality within the domain of criminology, the parapolitical nature of both the dual state and the national security state corporate complex. Using the USA as a prime example of the world’s current dual or ‘deep political state’, the criminogenic dimensions of the parapolitical systems of post 9/11 America are discussed. Using case studies, the dual state is examined as the causal factor of inexplicable parapolitical events within both the developed and developing world, including Sweden, Canada, Italy, Turkey, and Africa.