This week on The Learning Curve, guest co-hosts Charlie Chieppo and Alisha Searcy interview Leslie Klinger, annotator of the Sherlock Holmes stories. Mr. Klinger discusses Sir Arthur Conan Doyle; the creation of the Sherlock Holmes character; Holmes' relationships with Dr. Watson, Irene Adler, and Professor Moriarty; and famous Holmes cases. He also explores Edgar Allan Poe's influence on the detective genre, as well as the timeless significance of 19th-century horror stories such as Dracula, Frankenstein, and Dr. Jekyll and Mr. Hyde in popular culture. In closing, Mr. Klinger reads a passage from his annotated Sherlock Holmes stories.