The Case of the Registered Letter

Joseph Muller, a Secret Service detective in the Imperial Austrian police, stands out for his unique personality, lacking the imposing authority of Sherlock Holmes or the brilliance of Monsieur Lecoq. His expertise in detective work is noteworthy, offering a fresh perspective on crime-solving within the historical context of Austria. This character-driven narrative explores Muller's distinctive approach to investigation, highlighting his individuality in a field dominated by more traditional figures.