One of those 1950s sci-fi movies that plays out as a kind of morality play. Five people from all over the planet are taken on a UFO and provided with a mega-weapon as a kind of experiment to find out if mankind will destroy itself in a month. When they're returned, each adopts a different method to cope with their newfound powers. Inevitably this soon adopts a Cold War bent and builds to a climax with incredible - not to mention eyebrow-raising - implications. This reminded me of a TWILIGHT ZONE story.