World's Greatest Sleuth! by Steve Hockensmith

I picked up this book after reading a review of three books that dealt in some way with Sherlock Holmes; I didn't realize I was going to be getting the fifth in a series of murder mysteries. I enjoyed the 1893 Columbian Exposition setting, and I thought the story itself was pretty well-plotted. I found the main detectives a bit overwhelmingly country at times, but I may read some of the other books in the series.