chunk: D'Agosta meets Margo and Dr. Frock in the lab, where a Kothoga, an enormous chimeric beast, attacks them; they close a steel door to stop it. Margo theorizes the fungus mutated a smaller creature, and Dr. Frock says that without the leaves to eat, the Kothoga instinctively seeks the closest substitute, human hypothalami, until it runs out of targets and dies. D'Agosta finds a radio and tells Hollingsworth to lead the museum guests out via an old coal tunnel. Several guests refuse to go; the Kothoga returns to the main hall and murders them and the S.W.A.T. officers who enter through the skylights.