The Second Plague Rat

When ZAC returns home from the surface, he has found that Twitch's sentience experiment that day may not be a failure! Instead of dying like all the others, according to Twitch, this rat lived and escaped with his skin glowing a slight green, but the evidence wasn't there for ZAC to see. Apparantly, it ran off into the darkness of the sewers and Twitch demands it to be found and "brought back home". The sightings reported by Twitch's roachmen have been largely.. inconsistent.