Casebook of Sherlock Holmes Part 1 by Sir Arthur Conan Doyle.
These are positively the last stories. There is some disagreement as to their quality, and some claim that Conan Doyle was writing more experimentally, rather than to the conventional Sherlock Holmes formula. Anyone who finds this too offensive may wish to omit this story. Indeed, any listener who would understandably prefer to avoid my poor attempt at American accents, may prefer not to listen to a number of these stories.
Featured on The Memoirs of Sherlock Holmes - Sir Arthur Conan Doyle.
Public-domain recording courtesy of LibriVox (librivox.org).
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