Well, we knew it was coming. There has been such an overwhelming sense of doom hanging over this season with death symbols popping up at every turn: mass murders, sniper shootings, empty elevator shafts, dream-murders and Don doodling a noose.
"Christmas Waltz" is an improved episode of Mad Men in this uneven season of a longtime great TV series, an episode with a very welcome return to advertising. Too much of this season has been taken up with some fairly arbitrary soap opera doings.
It's incredible to see someone that can play a merciless killer just as easily as he can play a charming sweetheart. If anyone could appear in two completely different shows playing two completely different people, it's Jared Harris.