X: The Unknown

“It rises from 2000 miles below the earth to melt everything in its path!”

Dr. Adam Royston (Dean Jagger), an American research scientist at a nuclear plant in Scotland, wants to know why people near a remote village are dying with radiation burns. He teams up with Inspector McGill (Leo McKern) as the incidents keep turning up in a straight line leading away from a fissure the army was testing near. Leslie Norman's film leaves the village exposed to whatever feeds on energy, and Royston has little time before it reaches the next place.