Calificación
Reparto

Francine York
Dr. Lisa Wayne

James Brown
Col. Hank Stevens

Baynes Barron
Dr. John Andros

Russ Bender
Dr. Paul Martin

John Willis
TV Reporter

Bob Legionaire
Faith I Crewman

James Macklin
Gen. Mark Tilman

Phyllis Selznick
Earth Control Secretary

John Lomma
Earth Control