Twin Earths is an American science fiction comic strip written by Oskar Lebeck and drawn by Alden McWilliams that ran in Sunday and daily newspapers from 1952 until 1963.
[2] The story told of another Earth (called Terra), in the same orbit as our planet but on the opposite side of the sun, whose scientifically advanced civilization visits us in flying saucers.
Comics historian Stephen Donnelly noted: The main characters of the daily strip, which began June 16, 1952, were Vana, a Terran spy living on Earth to keep tabs on our technology so the Terrans could be sure we and our war-like ways didn't pose a menace to them; and Garry Verth, an FBI agent to whom Vana revealed herself in the opening sequence.
The first few months of story continuity involved a few exciting moments with Commie spies (out to get their hands on Terra's technology, of course), but mostly consisted of travelog-like views of Terran life—for example, the fact that in their liberated society, women, who constituted 92% of the population, ran things.
Instead of tying in directly with the daily, or delivering a second track of story involving the same characters, this series explored a completely separate aspect of the "twin earths" scenario.