Meanwhile, up on the surface Prof. Wyman's younger brother builds another bell and launches it in an attempted rescue mission. However, with the old man in the cave starting to leer lecherously at the women, and the volcano growing more unstable, the second mission may not find them in time. The old man reveals to the women that he murdered the other sailor years ago, increasing their apprehension. Just as he is about to assault one of the girls, the volcano erupts and the old man is crushed under falling rocks. The stranded crew of the diving bell make their way up toward the surface and are rescued.