Zombies of the Stratosphere (Republic Studios, 1952) was intended as the second serial featuring new hero Commando Cody and was the third 12-chapter serial featuring the rocket-powered flying suit introduced in King of the Rocketmen (1949).
Martian invaders join forces with the evil Dr. Harding, a traitorous electronic research scientist. They plan to use Harding's expertise to build a bomb and blow the Earth out of orbit and replace it with Mars!
Meanwhile, security agent Larry Martin, who can fly with an experimental rocket suit, investigates these clandestine visits to earth by the Martian spaceship. Can Larry and his cohort Bob Wilson stop the Martians before they complete their dastardly project?
By the way, there's not a zombie in sight.
Judd Holdren .... Larry Martin
Aline Towne .... Sue Davis
Wilson Wood .... Bob Wilson
Lane Bradford .... Marex
Stanley Waxman .... Dr. Harding
John Crawford .... Roth
Craig Kelly .... Mr. Steele
Ray Boyle .... Shane
Leonard Nimoy .... Narab
Tom Steele .... Thug in Launch [Ch. 3]/Truck Driver [Ch. 8]
Dale Van Sickel .... Peralta Junction Station Agent [Chs. 1, 10]
Roy Engel .... Boat Charter Operator [Ch. 3]
Jack Harden .... Kerr
Paul Stader .... Dock Heavy [Ch. 7]
Gayle Kellogg .... Dick, Rocketship Pilot