Of all the things said this week, "It's all a sham." is the one that will follow you to bed. It is an episode about people, which sounds obvious until you realise how rarely shows remember to do it. About a minute of it is scenes you have already watched, in case you have the memory of a goldfish. Story-wise, the series is on a lunch break, and this episode is the sandwich. Passable, if you are already invested.