

14/06/1957
With his assistant, Laura Hutchinson, Dr. David Conway develops a device to advance the fledgling science of earthquake prediction. After forecasting a large trembleor that will rock California within twenty-four hours, Conway cannot persuade the Governor to act. When the prediction proves true and further tests indicate that there are more quakes to come, Conway and Laura seek to perfect their device. Subsequent tests deep within Carlsbad Caverns discover an unknown element—E-112—that is responsible for the earthquakes and threatens to destroy the globe if it ever reaches the surface. The team determines that with only four weeks until Armageddon, the race is on to neutralize the killer element before it takes a devastating toll.

William Leslie
as Dr. David Conway

Kathryn Grant
as Laura 'Hutch' Hutchinson

Tristram Coffin
as Dr. Ellis Morton

Raymond Greenleaf
as Gov. Chaney

Paul Savage
as Ranger Kirk

Fred Coby
as Ranger Brown

Frank J. Scannell
as Sheriff Quinn

Charles Evans
as Gen. Bortes

Marshall Reed
as General's Aide

Terry Frost
as Chief Rescue Worker

David Armstrong
as Military Policeman (uncredited)
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