But how do you keep their dynamic fresh and exciting without falling back on easy tropes?
Nothing steals romance like parenthood.
Kitty is certainly someone who has some problems and needs some guidance.

Credit: Jeff Neumann/CBS
Thats not to say they wont have issues this season.
She has some suspicions with respect to Sherlock, an agenda he may have with Andrew, Doherty says.
Their first meeting is fun and interesting, but sparks do not fly.
Bigger problems will arise, however, when Sherlock uncovers that Joan had been writing about their time together.
Suffice it to say, he wont be too thrilled.
That Sherlock was, I dare say, a less private fellow and rather enjoyed Watsons writing.
Elementaryairs Thursdays at 10 p.m.