...Bobby's place. Bobby is, of course, completely horrified to see Zombie Sam up and about, but he hides that horror well enough from Sam's face while shooting rays of death with his eyes at Dean behind Zombie Sam's remarkably broad back. Hee. Dean attempts to bluff his way through the situation, all the while understanding that Bobby's already guessed what's really happened, but fortunately for the sake of the plot, Bobby chooses to let it go for the moment so he might share his latest bits of research with El Deano and The Ginormous Revenant. Seems that, virtually overnight, "demonic omens" -- including massive cattle die-offs and lightning storms -- "skyrocketed from out of nowhere" all across the central Mountain States with the exception of one location: The Great Divide Basin in southern Wyoming.