The Casebook of Sherlock Holmes (ep03) The Mazarin Stone

The Case-Book of Sherlock Holmes is the final set of twelve (out of a total of fifty-six) Sherlock Holmes short stories by British writer Arthur Conan Doyle first published in the Strand Magazine between October 1921 and April 1927.
Title of collection
The first British edition of the collection, published by John Murray, and the first American edition, published by George H. Doran Co., were both published in June 1927. However, they had slightly different titles. The title of the British collection was The Case-Book of Sherlock Holmes (hyphenated "Case-Book"), whereas the title of the American edition was The Case Book of Sherlock Holmes ("Case Book" as two words).
Further confusing the issue of the title, some later publishers released the collection under the title The Casebook of Sherlock Holmes ("Casebook" as a single word).

Sir Arthur Conan Doyle wrote 4 novels about Sherlock Holmes. (1 - A Study in Scarlet, 2 - The Sign of The Four, 3 - The Hound of the Baskervilles, 4 - The Valley of Fear.
(2) The Adventures of Sherlock Holmes, (12 short stories) followed the novels.
(3) The Memoirs of Sherlock Holmes, (11 stories) followed by
(4) The Return of Sherlock Holmes, 13 stories.
(5) His Last Bow, 8 stories followed by
(6) The Casebook of Sherlock Holmes, 12 stories and finally
(7) The Further Adventures of Sherlock Holmes, 10 stories by the BBC. All other Holmes stories would fall under this banner.
All will be uploaded here over the following week or two.