I picked up this novella from the Kindle store, but there seems to be no indication of who actually wrote it (assuming the JHW here to be a pseudonym). The story is dramatic and quite graphically violent, but the plot struck me as ridiculously complicated and unbelievable given the villain's ultimate intention. The character of Holmes doesn't really feel like the authentic Conan Doyle one, so this one is really only for completists. 3/5 ( )