The Poison Belt

Professor Challenger sends telegrams asking his three companions from The Lost World - Edward Malone, Lord John Roxton, and Professor Summerlee - to join him at his home outside of London and to bring a tank of oxygen. When they arrive, they are ushered into a sealed room, along with Challenger and his wife. In the course of his research, Challenger has predicted that the Earth is about to come into contact with a belt of poisonous ether, which will cause the end of humanity. Can they survive?