The Night the World Exploded (1957)

Plot

Dr. David Conway and his assistant, Laura Hutchinson, create a groundbreaking device aimed at predicting earthquakes. When Conway accurately forecasts a significant quake set to strike California within a day, he struggles to convince the Governor to take action. As the tremor occurs and further predictions reveal more seismic activity on the horizon, the duo intensifies their efforts to refine their invention. Exploring the depths of Carlsbad Caverns, they uncover a dangerous element, E-112, which poses a global threat. With just four weeks left to avert disaster, they race against time to neutralize this perilous substance.