The Restless Breed is a 1957 Western film, directed by Allan Dwan and starring Scott Brady and Anne Bancroft.

[1][2] 1865: Lawyer Mitch Baker is called into an office of the United States Secret Service to be told that his father was murdered in the border town of Mission, Texas.

He had been betrayed to Newton by an informer whilst on a mission investigating a group of gunrunners called "Newton's Raiders" supplying the forces of Emperor Maximilian I of Mexico with weapons, arousing the ire of the United States, which wants a Republican Mexico.

Mitch adopts the guise of a gunslinger, establishing his credentials by gunning down a few of Newton's men.

With previous sheriffs having been murdered soon after taking office, the only force for good in the town is Mr Simmons, who admits to impersonating a Reverend of the Gospel.