Credit: AMC

It might be November, and the weather might finally be starting to cool down, but The Walking Dead fans have nothing to worry about: The zombie apocalypse (much like the show) must go on!

In tonight’s episode, Season 3, Episode 4, “Killer Within,” we are headed back to the prison, where Glenn and Maggie get it on in a guard tower — hey, it’s not like they can go to a five-star hotel — and two main characters will say goodbye to what’s left of the land of the living, while the fate of a third character remains up in the air. Grab a box of tissues. It’s zombie time!

The Walking Dead airs Sunday, November 4, at 9 p.m. on AMC.

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Credit: YouTube Photo: Walking Dead Season 3, Episode 4: "Killer Within" Sneak Peek: Glenn and Maggie Are Having Lots of Sex in the Guard Tower