Mike Rogo finds The Beamer passed out, intoxicated, and Pamela refuses to leave him. Robin is nowhere to be found. While searching for her young brother, Susan is raped by a young, terrified crew member named Herbert. Susan talks with Herbert, who is remorseful and ashamed, and grows to like him. But Herbert, realizing the consequences of his actions, panics and runs off and falls to his probable doom. Susan rejoins the group and tells them nothing of what has happened. After an intense search, they make the painful decision to move on without Robin. At this point his mother, Jane Shelby, breaks down and vents her long-held disgust and hatred for her husband. The Reverend, having found a Turkish oiler, guides the other survivors through Broadway to the stern. They find the corridor to the engine room, which is completely submerged. Belle Rosen, a former W.S.A. champion, swims through the corridor and finds the passage to get them to the other side. Upon their arrival, they find the engine room, or "Hell" as Mr. Martin calls it. They take time to rest and save the batteries on their recently acquired flashlights. In the darkness Linda Rogo makes a move on the Reverend. After their rest they see the way out—five decks up, on top of a fractured steel wall they name "Mount Poseidon". During the difficult climb, Linda Rogo rebels and attempts to find her own way. She chooses an unstable route and falls to her death, impaled on a piece of sharp steel. An explosion rocks the ship, and Reverend Scott, in an insane rage, denounces God, offers himself as a sacrifice, and commits suicide. Mary Kinsale, an English spinster, screams in grief and claims that they were to be married. Her fellow survivors aren't quite sure what to make of this revelation. Mr. Martin takes charge of the group and they make their way into a propeller shaft where the steel hull is at its thinnest. The oxygen supply begins to give out, but after much waiting, they are finally found. Belle Rosen has a heart attack and dies before the rescue team can reach her. The rescue team cuts through and the group climb out of the upturned hull. Manny Rosen, however, refuses to leave without Belle's remains, which are lifted out after the others have left. Once outside, the survivors see another, much larger group