This, Game of Thrones, Dexter, Westworld, and True Detective are all shows that started out brilliant but dipped in quality. For me it stopped being as enjoyable by the start of season 3, I really loved season 2 but I think they might have written themselves into a corner, and I felt that the answers they gave to some of the shows key mysteries just weren't very satisfying, or even made much sense. None the less I live for Andrew Scott as moriarty, he is so fantastic and is one of, if not my favourite performances in a tv show. No disrespect to the rest of the cast because they are great too, he just stands out, and memorably so.