chunk: Margo suggests using liquid nitrogen to kill the Kothoga, as it is part-reptilian and likely cold-blooded. While collecting the remaining leaves in the lab, Margo and D'Agosta discover Dr. Frock has been killed. In the sewers, D'Agosta uses the leaves to lure the Kothoga away from the coal tunnel, allowing the guests to escape. However, liquid nitrogen has no effect on the creature. Margo and D'Agosta flee. In the lab, her computer completes the analysis of the creature's human DNA, revealing Whitney is the Kothoga, mutated after drinking the tribesmen's soup.
  The Kothoga smashes into the lab through the ceiling, while D'Agosta is locked outside. The creature chases Margo, corners her, and suddenly pauses, seemingly recognizing her. Margo starts an explosive fire that destroys the Kothoga, surviving by hiding inside a maceration tank. As dawn comes, D'Agosta and a team of police break into the lab, see the charred remains of the Kothoga, and rescue Margo from the tank.