This edition contains all 3 full-length novels and all 2 short stories featuring Professor Challenger.

George Edward Challenger, better known as Professor Challenger, is a fictional character in a series of fantasy and science fiction stories by Sir Arthur Conan Doyle. Unlike Conan Doyle's self-controlled, analytical character, Sherlock Holmes, Professor Challenger is an aggressive, hot-tempered, dominating figure.

Table of Contents:
- The Lost World
- The Poison Belt
- The Land of Mist
- When the World Screamed
- The Disintegration Machine