AMC has released a sneak preview from next week's episode of The Walking Dead entitled "Killer Within", airing Sunday, November 4 at 9 PM ET. Last night's episode, "Walk With Me", featured Rick (Andrew Lincoln) and his group securing the prison, although there is still much work left to be done. Take a look at this scene where Glen (Steven Yeun) and Maggie (Lauren Cohan)'s new love nest is discovered by Rick, Daryl (Norman Reedus), T-Dog (IronE Singleton), and Carol (Melissa Suzanne McBride).