Whether or not you like this audio one-man play depends one the sort of Holmsian you are.
If you are a Holmes pedant, there will be little niggles, but if you are happy to let these go, then it's a good play - especially if you have a taste for the postmodern.
Robert LLewellyn plays all the parts brilliantly, including Holmes, Moriarty, Arthur Conan Doyle,the propriator of the Strand Magazine and even a clarevoyant lady. I honestly don't know why LLewellyn isn't more widely known. Perhaps I just don't move in the right circles.
There is also a 20 or so minute discussion at the end of the play between LLewellyn, David Stuart Davis and Nicholas Briggs the director and producer of this audio range. They talk about the production, Davis' two stage plays (The Last Act and The Death and Life) of which this is one adaptation. They also discuss the longevity and appeal of Sherlock Holmes.