Man has split the atom and created the ultimate weapon. But how could he have known he would also create Them!? The terror begins when a hard-nosed patrolman (James Whitmore) discovers a dazed child wandering in the New Mexico desert near a car and house trailer destroyed by a mysterious force. Whitmore next discovers a ransacked general store; its cash drawers are full but the sugar supply is missing. And on the floor lies a battered corpse containing...

An ex-Confederate spy for the Quantrill's Raiders, Jeff Travis torched and looted mercilessly for the "Confederate cause" during the Civil War. With the Union victory, he fears he is a wanted man and heads out West, closely followed by his long-time love Josie. He decides to settle in Prescott, Arizona, where he takes a job driving for the Conroy Stage Company. Soon enough, he learns that the town is now in the hands of outlaw gangs. Now he is expected...