When Ray Osborne, a young American photographer, was precipitated suddenly from the twentieth century into a prehistoric age, he did not know that he had blundered into the field of an experimental time machine. But he soon realized that the new world was a hostile one when he was captured by a strange group of hunters, speaking no language he had ever heard. Only after he met the Murian, Cho, and was able to communicate with him telepathically, did...