The Outer Limits

Two unidentifiable rock samples in Dr. Temple's (Barry Atwater) geology lab conceal protoplasmic alien invaders -- hideous life forms capable of entering and controlling a human "corpus." Enter Paul Cameron (Robert Culp), who, thanks to a metal plate in his head, can telepathically hear the rocks communicating....and plotting their evil take-over of the world. What ensues is one of the most twisting, turning episodes ever to come from the darkest reaches of the Outer Limits.