Retail crime is a multi-billion dollar industry, and understanding its different facets is essential if any progress is to be made in reducing its levels. This e-book focuses on ‘theft by employee’ or ‘internal theft’, taking the stance that the problem of retail crime needs to be addressed from within a retail organisation. By putting their own houses in order, companies send out positive signals to suppliers and customers. The first two papers attempt to apply existing theory to retail crime; papers 3 and 4 explore theft by employee from an inside perspective; paper 5 takes the stance that measures and measurement systems must reflect the context to which they are applied; and paper 6 addresses future directions for retail crime research.