Book excerpt: Much of the devastation caused by the recent earthquake in Turkey was the result of widespread corruption between the construction industry and government officials. Corruption is part of everyday public life and we tend to take it for granted. However, preventing corruption helps to raise city revenues, improve service delivery, stimulate public confidence and participation, and win elections. This book is designed to help citizens and public officials diagnose, investigate and prevent various kinds of corrupt and illicit behaviour. It focuses on systematic corruption rather than the free-lance activity of a few law-breakers, and emphasises practical preventive measures rather than purely punitive or moralistic campaigns.