Mysteries reflect the eras in which they are written. As times change, they change. They can be both funny or grim, sometimes in the same work, and authors can change their styles completely. New forms are developed then disappear as the next style becomes popular. The best mysteries are as distinguished as any literature, but the bulk of them represent light entertainment. In this course, we will examine both the distinguished and amusing; all of them extremely entertaining. The class is a fun investigation of the many ways the genre has changed over time.