An American businessman scoffs at a shopowner's claim that one of his books was Merlin's diary, until a terrifying vision of Merlin turns his hair white. As he runs from the shop, the shopkeeper thinks that he must remember not to leave his diary out.; An alien emperor of an immortal race comes to Earth disguised as a human to decide whether or not to order an invasion. He is impressed with the humans' decency and falls in love with a human girl, calling off the invasion and giving up immortality to stay with her.; A bigot rounds up some thugs to don black hoods and drive some harmless gypsies out of town. One of the gypsies curses him, and he is never able to remove his hood for the rest of his life.; A airline pilot is nearly hit by a flying saucer and must bank suddenly to avoid it. The passengers where mostly asleep, and the one who was awake says that he saw nothing...because he's really a Martian tourist and the saucer came to pick him up.; A criminal escapes from prison after 10 years and robs a warehouse. He is found by a police officer with superhuman powers, and is surprised to learn that the police now only recruit robots.