I love the basic idea of this - and how the hound is created is absolutely fabulous. I won't give details so as not to spoil people but full marks to the author there! And if I only really care about the hound, the rest of the book's enjoyable enough, though I did see a couple of the twists coming. Seeing as I'm usually hopeless at mysteries I was quite surprised about that, but if I'm not a huge mystery fan I do know my gothic horror tropes, so I reckon that's what I was picking up on. And it was fun, but I can't say I'm raring to go out and find more Sherlock Holmes stories to read - though I suppose that, as a main character, he's off to the side for most of this. It's really more of a showcase for Watson, the doctor who apparently can't recognise Charing Cross Hospital from its initials and who's content to inflict a violent murderer on South America just so long as he isn't killing in England, which I side-eyed pretty bloody hard I can tell you.