Listen for "You realize we have our own operation, right?", a line that does more work than most of the supporting cast. Feelings are aired, tempers flare, and at least one character needs a long walk afterwards. There is a generous helping of flashbacks, served cold. It also finally answers a question from S04E13, "Is that a serious question? Why would he be here?", so patience pays, eventually. Television at its most moreish.