Following the discovery of a doomsday machine capable of destroying Earth, the launch of a US space mission to Venus is taken over by the military.
Bobby Van
Ruta Lee
Mala Powers
James Craig
Grant Williams
Henry Wilcoxon
Essie Lin Chia
Casey Kasem
Lorri Scott
Denny Miller
Mike Farrell
Mark Bailey
Mary Meade
John Cestare
Raymond Mayo
Michael Christian