Overview

Dr. Steven Sorenson plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. This experiment causes a crack to form and grow within the Earth's crust, which threatens to split the earth in two if it is not stopped in time.

Cast

Dana Andrews

Dr. Stephen Sorenson

Janette Scott

Dr. Maggie Sorenson

Kieron Moore

Dr. Ted Rampion

Alexander Knox

Sir Charles Eggerston

Peter Damon

John Masefield

N/A

Sydna Scott

Angela

Gary Lasdun

Markov

John Karlsen

Dr. Reynolds

Alfred Brown

Dr. Bill Evans

Mike Steen

Steele

Todd Martin

Simpson

N/A

Jim Gillen

Rand