"What good are you going to get out of your diamond?" [MAZA] We're back in the theater for another Sherlock Holmes story in our series on the Apocrypha of Sherlock Holmes. It seems that Conan Doyle saw great potential in other mediums (not just the seance type, either).

The Crown Diamond: An Evening With Sherlock Holmes is clearly a rehash of the short story "The Mazarin Stone." Or was thought to be, anyway. That is, until James Montgomery, BSI ("The Red Circle") discovered it in an exercise book and determined the publication order. And it's just a Trifle.

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• The Crown Diamond (Arthur Conan Doyle Encyclopedia)
• Exercise book containing The Crown Diamond (Toronto Public Library)
• Episode 290: James Montgomery (I Hear of Sherlock Everywhere)
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Music credits Performers: Uncredited violinist, US Marine Chamber Orchestra Publisher Info.: Washington, DC: United States Marine Band. Copyright: Creative Commons Attribution 3.0