A mysterious force systematically obliterates strategic installations across the globe, prompting government security chief Henderson to investigate an alarming hypothesis: an atomic weapon operated from lunar orbit. This 1952 serial thriller, helmed by director Fred C. Brannon and written by Ronald Davidson, stars George D. Wallace, Aline Towne, and Roy Barcroft in a race against time to uncover the extraterrestrial threat before civilization falls under attack from space.