Book excerpt: From Pulitzer Prize–winning critic Michael Dirda, a delightful introduction to the creator of Sherlock Holmes A passionate lifelong fan of the Sherlock Holmes adventures, Pulitzer Prize–winning critic Michael Dirda is a member of The Baker Street Irregulars—the most famous and romantic of all Sherlockian groups. Combining memoir and appreciation, On Conan Doyle is a highly engaging personal introduction to Holmes's creator, as well as a rare insider’s account of the curiously delightful activities and playful scholarship of The Baker Street Irregulars. On Conan Doyle is a much-needed celebration of Arthur Conan Doyle’s genius for every kind of storytelling.