It's a good story, poorly executed. The women in this show are awful characters and not realistic at all. They are all irrational and hard to watch. At all points throughout this show you are screaming at women in this show because they are consistently doing stupid things. The person you're supposed to feel sorry for, you instead loathe throughout. The only redeeming part of it is the story around Jefferson Grief. It's a shame because normally Stephen Moffat delivers to a very high standard.