The Case of the Registered Letter

"The Case of the Registered Letter" by Auguste Groner is an intriguing crime story from the early 1900s. It follows Joseph Muller, a detective in the Imperial Austrian police, as he investigates the puzzling death of John Siders. Initially, all signs point to Albert Graumann as the killer, but Graumann's aunt is confident of his innocence and asks Detective Muller for help. As Muller digs deeper, he discovers that nothing is as it seems. The story revolves around a web of lies and old grudges, where the victim, Siders, may have planned his death. The detective uncovers a critical letter which reveals Siders's true intentions and clears Graumann's name. The book combines suspense with examinations of right and wrong, as well as human motivations.