The Adventure Of The Second Stain

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The Baker Street Irregulars are fictional characters who appear in three Sherlock Holmes stories, specifically two novels and one short story, by Arthur Conan Doyle. They are street boys who are employed by Holmes as intelligence agents. The name has subsequently been adopted by other organizations, most notably a prestigious and exclusive literary society founded in the United States by Christopher Morley in 1934.

Wikipedia. CC BY-SA 4.0. Updated Jul 15, 2026.

“The Adventure Of The Second Stain.” Baker Street Irregulars. Radio broadcast, April 5, 1970.