The Casebook of Sherlock Holmes, published in 1927, collects the final set ofSherlock Holmesstories authored byArthur Conan Doyle. All of the included stories appeared previously inThe Strand Magazinebetween October 1921 and April 1927.
As usual, the mysteries generally purport to be accounts written by Holmes’s friendDr.John Watson. Uniquely, however, three stories in theCasebookare presented from alternative points of view: “The Adventure of the Mazarin Stone” is narrated in the third person,...