Disappointing. I felt the author maligned both Holmes and Watson: Holmes by making him less than the analytical genius he is, allowing him to fall into traps and burdening him with humility and an overactive conscience, and Watson by making him a man so in love with his own voice and eloquence that he rambles on and on and on. So many times, I was reduced to yelling at the playback, telling him to shut up already and move on.
I found the plot awkward as well, with the author trying too hard to tie the very different story lines into one cohesive plot. Not anything I'd recommend to Holmes fans.