This is the third and final volume in The Vortex Blaster series featuring "Storm" Cloud, computing genius who blows out those nasty Atomic Vortices that can eventually eat up an entire world if left undestroyed. Doc Smith's hero has already saved the world from many atomic vortices with his prodigious computing mind, but here is thrust into taking on more hero like behavior by saving a newly discovered civilization from attack by evil forces. What more needs be said? A thrilling tale well told. This pulp SF thriller was first published in 1942 in Astounding Stories.