While I very much enjoyed another Sherlock story in this series, I didn't give enough thought to the fact that this series is essentially re-packaging a scattering of Sherlock stories by various authors, so there is no consistency of style or story, and just because you liked one doesn't mean you'll like the others.
I slogged it to 50% of the book before finally calling it quits for a few reasons. First, it's clear the author loves the Sherlock canon; the whole book is steeped in nods to both Conan Doyle's work and other contemporary authors of the day. This is a plus. However, this begins to feel like reference for reference's sake, as a large portion of the "winks" add little to the story. It began to feel like the author's goal was to prove how much he knows about Sherlock literature rather than engage me with a story. Also, I found myself skimming past pages of background information that really should have been left out. A reader need not be reminded how terrible the living conditions are in Whitechapel and Spitalfields so repeatedly. The author clearly conducted years of research, but unfortunately, the volumes of research inserted got in the way of the story so much that I lost all interest and momentum.
The dialogue felt like I was listening to a one-trick impression of an English accent. Each character said something, then repeated it, and tagged it with a dialect tag. [say something] [repeat shortened version, indeed]: "It was horrible. Horrible, indeed. Wasn't it?" "He's a fine lad. Very fine, indeed, eh?" Ever watch the US version of The Office? Think of Andy doing his British accent. That's what this felt like. And this is just the pattern without the author trying to introduce Cockney accent, which grinds the dialogue to a snail's pace. "Oy, guvnah, 'e lykes a 'ole to do, but me button 'ole frount, innit?" (*These are not actual quotes, but they may as well be.)
Finally, about the place where I left off, the introduction of Oscar Wilde came off reeking of homophobia and played to comedic effect that fell flat. That's when I said, "Eenuffs eenuf, innit?" There are too many other good books out there to read.