Always my favorite Sherlock Holmes story, I am a bit annoyed that the original plot wasn't good enough for the writers. I thought Ian Richardson was a very good Holmes, but the remainder of the cast seemed stiff and uninteresting. Mary comes off as too much of a goody two shoes and Watson is pretty dense and sort of unattractive in the way he present himself. The Sholto brothers aren't quite cracked enough as they are portrayed. There's also that silly byplay as Holmes and Watson try to keep up with Toby. Still, it works Ok.