With his assistant, Laura Hutchinson (Kathryn Gant), Dr. David Conway (William Leslie) 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 Armegddon, the race is on to neutralize the killer element before it takes a devastating toll.

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  1. Luci Ward


  2. Jack Natteford


  3. Fred F. Sears


Top Billed Cast

  1. Kathryn Grant

    Kathryn Grant

    Laura 'Hutch' Hutchinson

  2. William Leslie

    William Leslie

    Dr. David Conway

  3. Tris Coffin

    Tris Coffin

    Dr. Ellis Morton

  4. Raymond Greenleaf

    Raymond Greenleaf

    Gov. Chaney

  5. CE

    Charles Evans

    Gen. Bortes

  6. FJ

    Frank J. Scannell

    Sheriff Quinn

Full Cast & Crew

Movie Data


Status Released

Original Language English

Runtime 1h 4m

Budget -

Revenue -

Homepage -

Release Information

  • June 14, 1957
    NR, Theatrical



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