This is the penultimate episode for this season, and for this series. Next Sunday, The Leftovers ends – whether or not it provides a satisfactory conclusion. (I’ve always felt that answering questions is not exactly what this series prizes the most.) But tonight, the next-to-last episode provides some sort of potential answers in its episode’s title alone. It’s called “The Most Powerful Man in the World (And His Identical Twin Brother).” And in addition to being all about Kevin (Justin Theroux) in the title, the episode also pays due attention to Sarah, played by Carrie Coon – who’s also ripping it up this season as Gloria Burgle on FX’s Fargo.