This Estonian EPPO/OLAF volume provides a comprehensive collection of material for EPPO/OLAF investigations, including case law, sources of law, and relevant institutions. In addition, it contains a compendium of national statutory law related to EPPO/OLAF investigations, highlighting the process of criminal investigations. Finally, it deals with OLAF investigations in Estonia, focusing on the investigation mandates of the European Anti-Fraud Office and its national partners. Prof Dr Jaan Ginter has acted as the publication’s national expert. While written in English, the volume includes footnotes that reproduce the original Estonian legislation in the local language. Easily navigable with the help of visual symbols, it is designed as a quick reference tool for academics, students, practitioners and other interested readers.