Sherlock Holmes and the case of Twisted Love

Who is Jim Moriarty really? When the world renowned consulting criminal facade falls and a special girl spends time with him behind closed doors, who is he then?

And Sherlock Holmes, when he also meets a new girl, one that doesn't match his intelligence, one that isn't a dominatrix, how does he react to that? Will he learn to let his feelings take control and eventually listen to his heart or will nothing change at all?

And John Watson, with married life, how does he feel about a new lady in his flat taking Sherlock's focus off the cases?

Will these new relationships affect work? As the world's best consulting detective and criminal are distracted, will there be someone new on the scene?