Quote Originally Posted by Witch_Doctor View Post
The women seem to know that the tougher-to-kill infected came from Boulder. Anyone else pick up on this? I wonder how they would know. Maybe they checked ID of the one's they killed and found Boulder addresses. Just spit-balling ideas.
That's something that's not really included, but there were some previous encounters on the surface after that happened as the survivors were scattering. Gloria gathers intel on the surface from time to time as well. They learn when she's around.

This is one of my favorite episodes. Lots of dynamic audio storytelling that's invisible.