Will Kane, the sheriff of a small town in New Mexico, learns a notorious outlaw he put in jail has been freed, and will be arriving on the noon train. Knowing the outlaw and his gang are coming to kill him, Kane is determined to stand his ground, so he attempts to gather a posse from among the local townspeople.
A chance accident causes a nuclear physicist, who's selling top secret material to the Russians, to fall under FBI scrutiny and go on the run.
Husband-and-wife scientists pick up a pie-in-the-sky TV message supposedly from Mars.
