I've been sitting here reading A Study in Scarlet... for hours.  I haven't been able to put it down until just now, when I felt I had to, to breath and vent a little emotion.  Sherlock Holmes, who knew how incredibly heart breaking some of his tales are!  If you haven't read it, I give it a high recommendation to you (anyone and everyone).  This story and format are both so different from The Hound of the Baskervilles.  It's broken up into parts and it's brilliant!