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
as Danny
Ruta Lee
as Dr. Marion Turner
Mala Powers
as Maj. Georgianna Bronski
James Craig
as Dr. Haines
Grant Williams
as Maj. Kurt Mason
Henry Wilcoxon
as Dr. Christopher Perry
Essie Lin Chia
as Girl Spy
Casey Kasem
as Mission Control Officer
Lorri Scott
as Lt. Katie Carlson
Denny Miller
as Col. Don Price
Mike Farrell
as 1st Reporter
Mark Bailey
as Major / Astronaut
