Can’t we have just one good day? The world answers Glenn back with a resounding NO in The Walking Dead Season 3 Episode 4 titled Killer Within when they discover that the prison walls have been breached by hundreds of bloodthirsty zombies. Maybe that’s what is so great about apocalyptic fiction in general, no matter how bad your day is, it can always be a LOT worse. What could be worse than being stuck in a prison full of flesh-eating zombies? How about getting your throat ripped out by one of those zombies…