Five individuals from five nations, including the USA, USSR, and China, suddenly find themselves on an alien saucer, where an alien gives each a container holding three capsules. The alien explains that no power on earth can open a given container except a mental command from the person to whom it is given, then anyone may take a capsule and, by speaking a latitude and longitude at it, cause instant death to all within a given radius: thus each of the five has been provided with the power of life and death. Then, they are given 27 days to decide whether to use the capsules, and returned to the places from which each one came...
The arrival in a small mountain town of a dissheveled stranger launches a series of murders committed by some sort of animal. As the town doctor and his daughter attempt to help the stranger, the sheriff investigates the murders; and they uncover a sinister experiment involving two rogue scientists, a car accident victim, his wife and children, and a serum that causes a man to turn into a ravaging werewolf.
