I just read all the posts here -- fun! I must admit all of the comments regarding the husband and wife are more on the money than my own! I guess we're all in agreement that this a terrific episode. I guess the only thing unanswered for me (small point) is why the author chose to set the story not in the present but early on in the century. I enjoy stories set in different time periods, past and future, but wasn't quite sure why the choice was made here. Was it anything more than the "Prince of Darkness"'s references to airplanes and bombs? I don't know why, but I was half-waiting for some sort of pay off during the show. Oh, I didn't mention before, I love the whole conceit of the Earth being protected and allowed to continue by 36 virtuous men. That got me hook, line and sinker.