Peter Davison reads this exciting novelization of a classic Doctor Who adventure in which the Fifth Doctor encounters the Cybermen. A group of paleontologists have been savagely attacked while carrying out a study of fossilized dinosaur remains in an underground cave system on twenty-fifth century Earth. A party of troopers discover the Doctor and his companions at the site of the massacre. In trying to establish their innocence, they soon discover who was responsible - and the Doctor is confronted by an old enemy!
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