Narrator: HBO's ... In episode one, "Game of Thrones" fans might have recognized Donald Sumpter, the actor who played Maester Luwin. It turns out that his character in "Chernobyl," an elderly ...

which was the penultimate episode with 18.4 million viewers. 13.6 million viewers tuned in to the 9 p.m. airing of the finale. But the success of "Chernobyl" is great news for HBO, and shows that ...