The Disintegration Machine / The Horror of the Heights / When ...
Arthur Conan Doyle
Professor Challenger (5)
When the World Screamed
Professor Challenger (4)
The Land of Mist
Professor Challenger (3)
The Poison Belt
Professor Challenger (2)
The Lost World
Arthur Conan Doyle & Paul Cook
Professor Challenger (1)
Professor Challenger in Space
Stephen Theaker