Comparatively to past weeks, the latest episode of The Walking Dead, “When the Dead Come Knocking,” succeeded in showing some great examples of that age-old George A. Romero zombie parable: that humans’ greatest enemies are each other. While we were treated to some great scenes of zombie violence, this episode was at its best when man fought man, even on a more psychological level. On the whole, this episode was fairly solid, except for that scene of Andrea and The Governor in their lovemaking afterglow. That probably did more to cause nightmares. Perhaps the most chilling scenes of the season so far were of Glenn and Maggie’s interrogations by Merle and The Governor. Now, Glenn was always a nice guy and it’s quite hard to watch him tied up at a chair while Merle threatens him with a knife. However, Merle, pressing a flattened knife on someone’s upper lip isn’t all that threatening… nevertheless, once the facial pummeling starts, you ache to save the wily little fellow. Michael Rooker as Merle (as usual) gets a great showcase in this episode with his ribald, white trash torture methods. He is able to convey the heightened sense of power that Merle feels over Glenn here, and soon afterward, the subservience to The Governor in a moment’s time. Backtracking, his performed control over Glenn perhaps makes up for his being The Governor’s underling in his own mind.