True crime bestselling author Regina Stürickow delves into an important chapter in the history of crime: the ring associations. These criminal organizations, which organized burglars, smugglers, and extortionists, played a significant role in Berlin during the 1920s and in many other German cities. Regina Stürickow analyzes previously unknown sources and demonstrates how the history of the ring associations continued into the 1950s. We encounter a world of crooks who all too often colluded with police officers, making it difficult to apprehend them.