If you are doing Halloween Bingo, this book would work for: Spellbound, Supernatural, Relics and Curios, Shifters, and Country House Mystery. The only reason I am not counting it is because I started the audio before Sept.
Warlock Holmes is part parody/part fantasy rendering of Sherlock Holmes. Each chapter is based on a Holmes' adventure, and usually includes Watson doing some type of riff about a logical point or Victorian behavoir. (The whole discussion of the speckled ban is worth the cost of the book).
The difference is that Warlock Holmes is a man of unique talents and isn't quite normal. He might not be the brightest bulb in the bunch, but he is likable. His friends in Scotland Yard are also slightly different.
Robert Garson's narrative voice is spot on. He also doesn't do silly and annoying female voices.
The book does end on a bit of a cliffhanger. But there is are second and third volumes.
This is great.