Synopsis: Mike Martin becomes a deputy United States marshal in early-day Texas because of his almost unbelievable marksmanship. (That he has a rifle with a special scope doesn't hurt anything.) He hates the thought that he has been hired as a killer instead of a lawman but his superior, Marshal Bob Scott, sets him straight. For years a master gang of rustlers has raided government grazing lands and Lieutenant-Governor Watson orders Scott to get them.