This document provides an overview of the investigative process, including the difference between proactive and reactive investigations, weighted and unweighted solvability factors, the importance of goal-setting and planning, stages involved in planning an investigative plan, the three main areas of intelligence gathering process, and short notes on private and public databases. It also discusses the challenges and complexities of financial crime investigations and presents a case study on a self-devised accounting system. References to relevant books and journals are provided.