A terminally ill scientist (Dana Andrews) pushes forward with an experiment designed to tap energy sources deep beneath the Earth's surface, but the exercise goes dangerously wrong, resulting in the possibility that the planet could split in two! Can one conscientious scientist (Kieron Moore) and his ex-girlfriend (Janette Scott) reverse the damage before the globe breaks in half? Riveting sci-fi thriller co-stars Alexander Knox, Peter Damon. 96 min. Widescreen; Soundtrack: English.