A passive alien scout for an invasion assumes a human disguise but leaves when he becomes fed up with human violent entertainment.; A man gains mind-reading powers from volcano vapors and uses them to achieve political power.; A woman pays actors in an attempt to reform her crooked husband by fooling him into believing that an accident with a cyclotron has sent him into a "Mirror, Mirror" universe.; A Martian pet has misadventures on Earth until picked up by his master.; A timid man encounters a woman from Venus whom he saves from Martian bullies. She offers to become his wife and he returns with her to Venus.; Astronomers encounter a Plutoian who wishes to use their observatory to take pictures of his world from Earth.