French writer Émile Gaboriau was one of the founders and a recognized master of the detective genre. His novels have been translated into almost all languages of the world, and many great authors—Robert Louis Stevenson and Arthur Conan Doyle among them—have imitated his work. The novel “Murder at Orsieval” brought Gaboriau extraordinary popularity. In it, he introduces the reader to the noble and ingenious Monsieur Lecoq—an actual genius of detection, who earned his fame through keen intuition and remarkable enterprising spirit. To solve the case, he is ready to risk his life without hesitation—especially when it concerns a terrible and mysterious murder…