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
Danny
Ruta Lee
Dr. Marion Turner
Mala Powers
Maj. Georgianna Bronski
James Craig
Dr. Haines
Grant Williams
Maj. Kurt Mason
Henry Wilcoxon
Dr. Christopher Perry
Essie Lin Chia
Girl Spy
Casey Kasem
Mission Control Officer
