Doyle's Famous Sci-Fi Stories is a collection of two unique science fiction tales that deal with the hair-raising experimentation. Professor Challenger, in When the World Screamed, has contrived a way to reach the centre of the Earth. Once there, he rouses a beast that wreaks havoc on the world. Professor von Baumgarten, in The Great Keinplatz Experiment, exchanges the spirits of a drunkard and an infamous student.