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The three scientist Mr. Edward Malone, Mr. Peerless Jones and Professor Challenger come together to build a machine that can drill deep into the earth. When the machine’s construction is finally completed the drilling starts, and it will not stop until the earth’s mantle is reached. Everything goes well for the three men, until they reach something into the earth that threatens to destroy their excavation.

What is the reason for the excavation? What is threatening to destroy their mission and why? How is everything going to end? Will the three scientists manage to complete their goals, or it will all be one great failure?

This science fiction is the fourth Professor Challenger story and it was first published in 1928.


Sir Arthur Ignatius Conan Doyle (1859 - 1930) was a British medical doctor and writer. He is best known for the creation of the notorious characters of Sherlock Holmes and Dr. Watson. Besides the many Holmes stories, Doyle’s work includes science and fantasy fiction, many plays, poetry, historical and non-fiction novels. He wrote his first Sherlock Holmes story at the age of twenty-seven and it was published in 1886.

B. J. Harrison started his Classic Tales Podcast back in 2007, wanting to breathe new life into classic stories. He masterfully plays with a wide array of voices and accents and has since then produced over 500 audiobooks. Now in collaboration with SAGA Egmont, his engaging narration of these famous classics is available to readers everywhere.