Deducing that the Alien will not kill her because of the embryo she carries, Ripley begs Dillon to kill her; he agrees only if she helps the inmates kill the Alien first. They form a plan to lure the Alien into the foundry's molding facility, trap it via a series of closing doors, and drown it in molten lead. The bait-and-chase plan results in the deaths of all the remaining prisoners except Dillon and Morse. Dillon sacrifices himself to position the Alien towards the mold as Morse pours the molten lead onto them. Although the alien is covered in molten metal, it escapes the mold but Ripley activates the fire sprinklers, causing its molten metal exoskeleton to cool rapidly and shatter, blowing it apart.