Chapter 1: Creating the EPPO: supranational criminal justice, but not yet?.- Chapter 2: The discursive construction of supranational authority.- Chapter 3: The European Commission: a discursive entrepreneur for supranational criminal justice.- Chapter 4: National governments in the Council of the EU: negotiating sovereignty.- Chapter 5: The European Parliament: running hot and cold on the EPPO?.- Chapter 6: National parliaments: blowing the whistle on subsidiarity.- Chapter 7: The EPPO: a new era of supranational criminal justice.