Yielding up to man over the long centuries all that is known of the planet on which we live withholding from man forever their veiled secrets of the nature of matter and cosmic catastrophe, the secrets of other worlds in the vastness of the universe, of other forms of life, of strange organisms beyond the imagination of man.Intelligent, parasitic extraterrestrials that resemble Terran rocks, intent on enslaving the human race, find a hideout in geologist Dr. Jonas Temple's lab.
Although undetected by ordinary humans, physician Dr. Paul Cameron, who has a surgically implanted metal plate in his skull, is able to "hear" the alien "rocks" communicate with each other.
Something to stay the hand when it reaches out innocently for the whitened pebble, the veined stone, the dead unmoving rocks of our planet.Adapted from Louis Charbonneau's novel Corpus Earthling, first published by Zenith Books in 1960.
Dr Temple, who diagnoses Paul as schizophrenic after he reveals he hears voices, is the first to be possessed when he touches the alien rocks with his tongue.
[1] This was the second of three episodes to star Robert Culp (the other two were "The Architects of Fear" written by Meyer Dolinsky and "Demon with a Glass Hand" by Harlan Ellison).