This book describes the process of conducting private internal investigations by fraud examiners and presents a number of reports from the USA, Sweden and Norway. It evaluates a number of internal investigation reports to reflect on the practice of fraud examinations. Empirical studies provide a basis to reflect theoretically on practice improvements for fraud examiners. Rather than presenting normative recommendations based on ideal or stereotype situations so often found in existing books, it develops guidelines based on empirical study of current practice. Similarly, it presents strategies for successful internal investigations of white-collar crime by fraud examiners.