SEASON PREMIERE: Holmes and Watson are back, but Kitty’s here, too. And if you Sherlock Holmes fans remember a certain Baskerville hound much more than you do a character named Kitty, here’s a fun flashback of sorts. And this Kitty is played by Ophelia Lovibond, who sounds like a character Sir Arthur Conan Doyle might have concocted on his own. Then again, so does the star of PBS’s Sherlock import, Benedict Cumberbatch. Lucy Liu, Jonny Lee Miller stars.