The Case of the Registered Letter

Set against the backdrop of Imperial Austria, this detective novel follows Joseph Müller, a skilled Secret Service detective, as he navigates a web of intrigue and crime. The story delves into the complexities of law enforcement during a tumultuous period, showcasing Müller's investigative prowess and the challenges he faces. With a blend of suspense and historical context, the novel offers a captivating glimpse into the life of a detective in a richly detailed setting.