This film explores the new view of extraterrestrial life now emerging from the results of probes to the planets. The film discusses the conclusion of a number of distinguished scientists that other intelligent civilizations exist in the universe. Orson Welles' famous radio adaptation of H. G. Wells' classic novel The War of the Worlds was performed by Mercury Theatre on the Air as a Halloween special on October 30, 1938. The live broadcast reportedly frightened many listeners into believing that an actual Martian invasion was in progress. Although it sometimes stated there were many disclaimers pointing out the fictionality of the invasion, the true story is that Welles was asked to make such disclaimers but refused, only doing so at the very end of the feature.