The best episode of the season so far. Mixing it up with Mycroft was masterly. Leading to personal insights which were totally unexpected and some of the best humorous moments yet!
I do think I know one thing. There must be no hook up "ever" between Watson and Holmes. She is far too good for him. It would spoil the dynamic that works so well. Lucy Lui is simply to die for... what a wonderfully subtle and charming performance this episode. And lets be clear she simply lights up the screen!