The detective story centres on unravelling two questions: whodunit? and who is guilty? In Murder and Mayhem, Heta Pyrhonen examines how these questions organize and pattern the genre's formal and thematic structures. Beginning with a semiotic reading of the detective as both code-breaker and sign-reader, Pyrhonen's theoretical analysis then situates the reader and the detective in parallel worlds - both use the detective genre's typical motifs in solving the crime, but do not employ the same narrative interpretations to do so. This difference is examined with the help of the familiar game...