Join us for a classic Professor Challenger Adventure, from the celebrated author of the "Sherlock Holmes" series. This is a sequel to "The Lost World." An English scientist, with an interest in nature, discovers that the Earth is about to pass through a cloud of poisonous gas that may well wipe out all of humanity. Challenger and his companions create a sealed room, with several hours of air, to attempt to survive certain disaster. This novel is considered to be among the 100 greatest books of all time.