Thanks to NetGalley and Sapere Books for a review copy.

tl;dr
A twisty mystery with narration that strongly evokes the feel of the original series.

About
A pugilist dies at a boxing match - supposedly of natural causes. There's no reason to suspect foul play until another man from the same group also dies. Budding detective Sherlock Holmes is on the case, but the deeper he gets, the more it seems like everyone in this group has something to hide.

Thoughts
This book is the third in an original series featuring Sherlock's pre-Watson cases from the POV of Stamford (the man who introduced Holmes to Watson in the canon). Like most of the canon, it can be read in basically any order, so knowledge of previous books is not necessary. Also like the canon, the POV character does very little to characterize himself, focusing his narration entirely on the mystery at hand. Fans who prefer the plot-centric approach will find a lot to like, with several intertwined mysteries all happening at once, plenty of twists, and a satisfying solution. I was also pleased at how much research went into keeping the time period authentic.  Author's notes in the back list sources for anyone curious to learn more. Overall, a great read for Holmes fans looking for a good mystery with a similar feel to the original stories.