Reporters Clark Kent and Lois Lane arrive in the small town of Silsby to witness the drilling of the world's deepest oil well. The drill, however, has penetrated the underground home of a race of small, furry people who then come to the surface at night to look around. The fact that they glow in the dark scares the townfolk, who form a mob, led by the vicious Luke Benson, intent on killing the strange people. Only Superman has a chance to prevent this tragedy.
George Reeves
Superman / Clark Kent
Phyllis Coates
Lois Lane
Jeff Corey
Luke Benson
Walter Reed
Bill Corrigan
J. Farrell MacDonald
Pop Shannon
Stanley Andrews
The Sheriff
Ray Walker
John Craig
Hal K. Dawson
Chuck Weber
Phil Warren
Deputy Jim
Frank Reicher
Hospital Superintendent
Beverly Washburn
Child
John Baer
Dr. Reed (uncredited)
Stephen Carr
Eddie (uncredited)
John T. Bambury
Mole-Man (uncredited)
Tony Boris
Mole-Man (uncredited)
