They are particularly nervous around Reese Fowler, a fellow researcher who seems to wear his polarized goggles all the time, necessary due to the extreme brightness of the planet's sun.
One of the scientists attempts to leave a hastily scribbled note in the astronaut's spacesuit pocket, warning him of what has been happening; he exits the room, only to bump into Reese, who seems to read his mind, and then destroys him with a mere touch.
The astronaut is led to a remote cave by Julie and another researcher where he discovers that the others live in fear of Reese, who developed superhuman abilities when he was accidentally exposed to the planet's radioactive isotope-laden rainfall, which has mutating properties, resulting in the scientist's loss of hair and in the development of protruding eyes.
Reese, knowing that if the others return to Earth he will be left behind because of the danger he poses, has been holding the others captive, while threatening his touch if they reveal the secret of his plight, all the time searching for a cure.
To prevent Reese from knowing of his plans, the investigator is given a post-hypnotic suggestion to forget what he has learned, then—provided with a code word to recall the events—inform his superiors on Earth following his return.